Latest — 30 Sep 2026. Nidec’s board did on Tuesday evening what this page spent two runs declining to report: Kishida is out, Michio Kaida is in, and it is now a company disclosure rather than an aggregator’s. An extraordinary board meeting on 29 September accepted the resignation of representative director and president Mitsuya Kishida, 66, and appointed Michio Kaida, 70, First Senior Vice President and vice-chair of the corporate reform committee, as president and chief executive. The stated reason is the company’s own and worth quoting, because it is narrower than “dismissed over the accounting scandal”: in the course of correcting prior years’ results the board reviewed officer conduct and found that Kishida “had, on certain occasions, made statements or engaged in conduct in relation to financial reporting that could not necessarily be regarded as appropriate.” The claim audit’s thirtieth row, which marked the aggregated version of this Wrong yesterday, becomes Overtaken: the resolution claim was false when published, because Nidec’s 28 September statement said in terms that nothing had been decided; the name bolted onto it was right, because the appointment followed inside a day. What that does not license is treating the next unsourced claim as early rather than false. A claim that turns out true and a claim that was established are different things, and only one of them is publishable on the day.
And the tape took back a fifth of what the limit-down cost. Nidec closed +4.7% at ¥2,355, the largest single gain anywhere on this page in this run, on the CEO change and on a second report alongside it: Nikkei says Nidec is in final-stage talks to sell Nidec Components (founded in 1967 as Copal Electronics, wholly owned since 2014) to Carlyle for more than ¥100bn, about $636m. That one is a press report and not a disclosure, which is the same distinction that mattered on Monday and is worth keeping on a day the page is recording the other half of it as confirmed. The drawdown narrows from 23.5% to 19.9%. What has not arrived is the document. 30 September was the extended filing deadline for the annual securities report for the year to March 2026, and as of this compile no restated accounts and no final impairment figure have been verified from the company. The ¥1tn that took the stock limit-down is still a press number, against roughly ¥250bn of goodwill and fixed assets Nidec itself said was subject to impairment review and the ¥400bn it had previously warned of. Until the filing is read, the distance between ¥250bn and ¥1tn is the entire question and none of it is settled.
Tokyo rallied into quarter-end and five of the six went with it. The Nikkei closed +1.94% at 66,753.72, its best session since 7 September, on a weaker yen and last-day-of-quarter rebalancing rather than on data. Industrial output fell 1.7% month on month and retail sales slowed to +2.7% year on year. Nabtesco rose 2.6% to ¥4,919, its highest close since 17 August; Yaskawa 2.3% to ¥4,633, its highest since 7 September; TDK 2.1% to ¥2,981, its highest since 1 September. Harmonic Drive was the exception and barely, −0.5% to ¥6,420, ending a two-session advance with its drawdown a third of a point wider at 29.8%. Aichi Steel fell a second time, −1.3% to ¥3,040, its lowest close since 31 July, which is now more than the ¥75 dividend it went ex on Tuesday can account for. One note on the index figure, because this page normally corroborates it and cannot today: the two Tokyo-listed index ETFs ran ahead of the index, 1321.T +2.23% and 1330.T +2.45% against 1.94%, where on every recent session they have tracked it inside three basis points. On the last day of a quarter that is an ETF premium rather than an index revision, so they are not confirmation this run and the index figure is taken from the index.
Xetra and the US roll onto 29 September, and the minerals tier fell again on a day gold went up. Bullion rose 1.3% and the gold miners 1.3%, recovering about a third of Monday’s fall in the metal and a quarter of it in the equities, with silver +1.0%, oil −4.4%, the S&P −0.2% and the ten-year at 5.26%. REMX broke its run, +0.5% to $64.79, and every US minerals name on this page fell into it. MP fell 2.2% to $45.43, its lowest close since 3 August; USA Rare Earth 2.4% to $14.08, a fifth consecutive fall and its lowest since 29 July; Lynas 1.0% to $9.48, its lowest close since 6 January 2026; Novonix 0.7% to $2.67. A benchmark rising while its two largest US-listed rare-earth holdings fall two per cent is not a rare-earth session in either direction, and it is the second time this week the single names have travelled further than the fund. Perpetua fell 1.3% to $21.53 against gold miners +1.3%, which is worth stating precisely because that card’s argument is that this name tracks gold: on Tuesday it did not, and nothing the company published explains the difference. Ambarella added 0.1% to $68.73 against semiconductors up 1.2%, recovering none of Monday’s name-specific 5.5%. Schaeffler eased 0.9% to €6.40, its lowest close since 21 November 2025, taking the page’s widest drawdown to 46.6%. Compass Diversified fell 1.4% to $11.04. Novonix’s ASX primary held A$0.097 on 30 September, a twelfth consecutive close below the A$0.12 Yorkville floor and 19% under it, while Lynas’s Sydney line rose 1.4% to A$13.83 on that same session, a day ahead of its ADR. The correlations did not move for a second run: the window still ends at ISO week 39 and basket-to-REMX is 0.3581 on both bucketing methods.
And one claim to stop, on the two largest numbers of the session. Coverage of Nidec’s rebound has it “+6.2% to ¥2,389”. The close was ¥2,355, +4.67%; ¥2,389 sits between that and the day’s ¥2,398 high, so it is an intraday print published as a day’s move. The same session’s index figure has the same shape, a press account of the Nikkei at “+2.10%” against an actual +1.94%, with 2.10% landing between the 66,753.72 close and the 66,946.14 high. Both are wrong by roughly the distance from the close to the high, which is the signature and the reason the two belong in one row: the claim audit takes its thirty-second, and it is not the first Nikkei figure on this page to have been taken before the bell. A percentage move is a claim about a settlement. When it falls between a close and a high, it was read off the screen while the market was still open.
29 Sep 2026. Nidec fell a further 3.8% to ¥2,250 — ordinary trading this time, not a limit — Nikkei now reports that Kishida has decided to go, and the document that sizes the impairment is due tomorrow. The fall was ¥90 against a daily limit of ¥500 for a stock in the ¥2,000–3,000 band, so unlike Monday this is a cleared price rather than an unfilled order book, and it is the lowest close since 15 April 2026. Two things moved on the news strand and neither is a company disclosure. Nikkei reported on 29 September that president Mitsuya Kishida, 66, has decided to step down as chief executive and could submit his resignation as early as Tuesday — that is, today — attributing the decision to losses at the e-axle EV drive unit. And Nikkei's own impairment figure has firmed: on 28 September it put the write-down at more than ¥600bn, about $3.8bn, mainly on traction motor systems for electric vehicles, and said it could reach ¥1tn once the accounts are adjusted. That tightens rather than complicates the spread this page has been carrying, because Nikkei's number now sits between the other two: the third-party committee's ¥250bn of March, the only figure in a published document; Nikkei's “several hundred billion” of 15 September, now sharpened to more than ¥600bn; and Diamond's ¥1tn, which reads as the upper bound after adjustment rather than as the estimate. What has not arrived is anything from Nidec. A probe of its release feed for 29 September returns nothing, and the only company statement remains Monday's: it is “true that change in executive members and a large-amount impairment are being discussed,” but “none of them has been decided by the Company at this moment.” The annual securities report for the year ended March 2026, already extended once, is due 30 September — tomorrow. The columns move with the price and not the calendar: the drawdown widens from 20.4% to 23.5%, the twelve-month cell from −11.3% to −12.1%, the year to date from +9.8% to +5.5%.
Aichi Steel fell 3.9% and most of it is a dividend rather than a decision. At ¥3,080 it was the worst of the six Tokyo names and, taken at face value, the second-largest fall on the page this session. It went ex-dividend today: ¥75.00 a share, payable 26 November. On the ¥3,205 previous close that is 2.3 points of the 3.9%, so the actual repricing is about 1.6% — an unremarkable session for a magnet maker, and nothing was disclosed by the company. It is worth recording because two columns widen here on the ex-date and neither is a judgement about magnets: the off-high figure goes from 8.3% to 12.4% and the year to date from +9.7% to +5.4%, with roughly three-fifths of the price move being the distribution leaving the shares. This is the dividend cousin of the base-roll effect this page keeps flagging in Nidec's and Harmonic's twelve-month cells — a figure that moves because of a corporate action rather than a re-rating. Elsewhere Tokyo was quiet and mixed against a Nikkei down 0.60% to 65,481.27, with the two Tokyo-listed index ETFs corroborating the direction if not the size, 1321.T −0.16% and 1330.T −0.45%: Yaskawa +1.7% to ¥4,528, the best of the six, Harmonic Drive +0.8% to ¥6,450 — whose twelve-month cell gained eight points to +145.6% on a base that rolled down 2.4% — Nabtesco +0.3% to ¥4,794 and TDK −1.2% to ¥2,919.
Xetra and the US roll onto 28 September, and what took the minerals tier down was an oil price. Gold fell 3.9% in a session, its sharpest fall in this run, as Brent went back toward $106 after the White House rejected Iran's proposal to reopen the Strait of Hormuz, the ten-year Treasury yield climbed back above 5.2%, and futures markets moved to better than a 70% implied chance of an October Fed hike. That is an inflation-and-rates session, not a critical-minerals one, and it is the second time this month the whole tier has been repriced by something with no rare earth in it. Perpetua fell 7.1% to $21.82, the largest single fall anywhere on this page this run and its lowest close since 4 August, against gold miners −5.4% and bullion −3.9% — an ordinary amplification of the mining equities, with no antimony in it and no company disclosure, which is exactly the relationship that card exists to state. Its twelve-month column fell from +23.6% to +3.1%, twenty points on a seven-point session, because the year-ago base rolled onto 26 September 2025's $21.16, 11.4% above the $19.00 it replaced — the largest column move this run, and almost none of it price. MP went the other way for the same reason: −4.9% to $46.45, its lowest close since 3 August, yet its twelve-month cell improved from −36.7% to −32.3% on a base that rolled down 11.0% onto $68.63. USA Rare Earth fell 5.0% to $14.42, a fourth consecutive fall and its lowest close since 29 July, its year to date from +27.6% to +21.1%. Lynas fell 3.8% to $9.58, its lowest since 16 September, with the Sydney ordinary line following a session later, −0.9% to A$13.64. REMX fell 3.3% to $64.47 — a fourth consecutive fall and its lowest close since 6 November 2025, which is the most that fund has given back on this page. Two names outside the metals did their own thing: Ambarella fell 5.5% to $68.68 against SOXX −2.1% and SMH −1.1%, so roughly three times the sector and a name-specific leg that nothing the company published explains, taking its drawdown from 24.8% to 29.0%; and Schaeffler fell 2.6% to €6.46, its lowest close since 26 November 2025, widening the page's widest drawdown to 46.1%. Novonix was the one riser, +0.4% to $2.69, and its ASX primary added 1.0% to A$0.097 on 29 September — an eleventh consecutive close below the A$0.12 Yorkville floor, 19% under it. Compass Diversified eased 0.4% to $11.20. The correlations did not move: the basket-to-REMX figure is 0.36 on both bucketing methods, which agree to within 0.01 across all fourteen names.
And two claims to stop — one circulating, one this page's own. The first is the third-hand version of the Nidec story, and it is worth naming because it is what a reader searching today will be handed: aggregated coverage states as established fact that a board resolution to dismiss Kishida has passed, and names Michio Kaida as the incoming chief executive. Neither is established. Nidec's only statement contradicts the first in terms — executive changes are “being discussed,” and “none of them has been decided” — and Nikkei's 29 September report, which is the source for Kishida going, names no successor at all. Kaida exists and is a plausible internal candidate: he is Nidec's First Senior Vice President and Chief Technology Officer. That is precisely what makes the claim durable rather than obviously wrong — a real name bolted onto a decision nobody has announced, which will read as confirmed the moment an appointment is actually made. The claim audit takes its thirtieth row. The second is smaller and ours: the 28 September entry below called REMX's −0.4% to $66.66 “a fourth consecutive fall.” It was the third — 23, 24 and 25 September — because 22 September closed up 1.0% at $70.97, a figure this page reconstructed when the bar went missing and the vendor has since confirmed to the cent. Yesterday's session is the fourth. That is the thirty-first row and the seventh against this page, and the mechanism is the plainest one yet: a streak counted forward from memory instead of off the series it describes.
28 Sep 2026. Nidec closed limit-down, −17.6% to ¥2,340 — the largest single move this page has recorded in either direction — and the company has confirmed the substance of the report that caused it while confirming none of its numbers. The fall is exactly ¥500, which is the Tokyo Stock Exchange daily price limit for a stock in the ¥2,000–3,000 band, so this is a mechanical stop rather than a print: the stock touched ¥2,405 early, reached the limit before 10:45 JST and sat on it for the rest of the session on 28.0m shares, with the day’s low equal to its close. The cause is a Diamond Online report published that morning: that Nidec intends to book a retroactive impairment of roughly ¥1tn in the year ended March 2026 against the accounting misconduct, and that an emergency board meeting on 25 September resolved to dismiss president Mitsuya Kishida, with a successor possibly named as early as 29 September. Nidec responded during the session, and the wording is the part worth holding onto. It said it is a fact that it is considering executive changes and large-scale impairment processing — 役員変更及び大規模な減損処理について検討をしているのは事実 — but that nothing has been decided at this point, and that it will disclose promptly once anything is. That is a confirmation of the category and a refusal of the size, and the distinction matters because three impairment figures are now circulating from three different places. The third-party committee’s report, published in March, put the potential charge at about ¥250bn, centred on the automotive business — the only one of the three that sits in a published document. Nikkei reported several hundred billion yen on 15 September. Diamond’s ¥1tn is four times the committee’s number and would, as the coverage notes, wipe out roughly a decade of accumulated profit. This page carries ¥1tn as a press figure and not as a disclosed one, and the document that settles which of the three is right is due in two days: the annual securities report for the year ended March 2026, already extended once, with a 30 September deadline. What the session changes in the tables is large and entirely price-driven, which is a reversal of the pattern this page has spent a fortnight describing. Nidec’s drawdown goes from 3.4%, the tightest on the page by a wide margin, to 20.4%; its twelve-month column from +6.7% to −11.3%; its year to date from +33.2% to +9.8%. Not one of those moves came from a base rolling. Two cautions to keep attached to it. This is a governance and accounting event, not a demand event — nothing here says anything about motors going into robots — and a limit-down close is an unfilled order book, not a cleared price, so the ¥2,340 in the table is where trading stopped rather than where it settled.
Nothing else in Tokyo moved with it, which is the right shape for a single-name governance event. The Nikkei closed −0.73% at 65,877.62 — cross-checked against the two Tokyo-listed index ETFs, 1321.T −0.76% and 1330.T −0.74% — and the other five Tokyo names on this page sat inside a point of it: Harmonic Drive +1.6% to ¥6,400, its highest close since 17 August, Nabtesco −0.2% to ¥4,782, Yaskawa −0.6% to ¥4,453, TDK −0.8% to ¥2,955, Aichi Steel −0.6% to ¥3,205. A seventeen-point fall in one name against five names within a point of the index is about as clean a separation as this page gets. Xetra and the US advance one session to 25 September, and both were quiet. Schaeffler recovered 1.4% to €6.63, its second rise after the two-session −8.3% the claim audit now dates to the Jefferies note; the drawdown narrows to 44.7% and is still the widest on the tier. Ambarella rose 4.0% to $72.68, its highest close since 21 August. The minerals tier did almost nothing: MP −1.0% to $48.83, USA Rare Earth −1.3% to $15.18, Lynas +0.2% to $9.96, Perpetua +0.3% to $23.49 against gold miners up 0.6% and bullion up 0.4%, Novonix +1.5% to $2.68, and REMX −0.4% to $66.66, a fourth consecutive fall and its lowest close since 31 July. Novonix’s ASX primary closed A$0.096 on 28 September, a tenth consecutive session below the A$0.12 Yorkville floor. Two twelve-month columns moved several times their price change, both on the base: MP’s from −30.8% to −36.7% on a 1.0% session and USA Rare Earth’s from −7.7% to −16.6% on a 1.3% one, because the year-ago base rolled onto 25 September 2025 and jumped 8.3% and 9.2% respectively in a single step. Harmonic Drive’s went the other way for the same reason, +123.3% to +137.9%, on a base that rolled down 4.6%.
The obvious explanation for Ambarella’s 4% was ten days old, and checking its date is the only reason this page is not printing it as a cause. The session ran roughly three times the sector — SOXX +1.17%, SMH +1.01% against Ambarella’s +4.04% — so a name-specific leg is real and wants an explanation. The candidate is the Developer Zone expansion on Google Cloud: a cloud-hosted IDE, remote access to live silicon, agentic tooling on Gemini Enterprise, a ZEDEDA fleet integration and an Ultralytics YOLO collaboration for CVflow devices. It is genuinely on-thesis for this position. It is also dated 15 September 2026, 09:00 ET — seven sessions before the move, and long since in the tape. Aggregator write-ups published on 25 September describe it as having happened “in September 2026” without a day, which is the mechanism by which a ten-day-old release reappears as a same-day catalyst. Nothing was published by Ambarella on 24 or 25 September. So the read is unchanged from the 24 September session: sector beta plus a name-specific leg this page cannot source, and no robotics content in either. That check is the direct lesson of yesterday’s claim-audit row, run in the opposite direction — there a live catalyst was aged into irrelevance, here a stale one was nearly freshened into a cause.
And one against this page. The 23 September entry below recorded “Novonix 3.4% to $2.801”. The price and the “lowest since 9 September” are both right; the percentage is not. Novonix closed at $2.85 on 22 September — a figure this page itself published in the tier-two table that run, and one the vendor has since backfilled at exactly that after the 22 September US bar went missing for seven tickers — so the session was −1.7%, not −3.4%. The claim audit takes its twenty-ninth row and the sixth against itself. Unlike the other five it has no reconstructable mechanism, which is its own finding: −3.4% implies a base of about $2.90, and no close anywhere in the series is $2.90.
27 Sep 2026. The widest drawdown on this page was blamed on nothing for two days, and the catalyst was sitting one session away the whole time: Jefferies cut Schaeffler to €8.70 on 23 September, and this page dated that note to a week earlier. Nothing traded anywhere on this page over the weekend, so there are no new closes, correlations or column moves below, and the news pass across all three tiers found no company disclosure since Friday — Nidec, MP, USA Rare Earth, Lynas, Perpetua, Novonix, Niron, TDK, Aichi and Compass all quiet. What the pass did turn up is an error of this page's own. On 25 September it described Schaeffler's −6.2% session as unexplained and added that “the only analyst action on the tape is a week old — Jefferies cutting its target to €8.70 while keeping a Buy.” Both halves cannot be true at once, and the dating is the part that is wrong. There were two Jefferies notes: 5 August, €10.45 to €9.45, and 23 September, €9.45 to €8.70. The page took the target from the September note and the age from the August one, and so retired as stale a catalyst that was one day old. Analyst Vanessa Jeffriess kept a Buy and wrote that Schaeffler's own reduction of its 2028 targets had damaged credibility — while calling the non-automotive robotics business the most attractive investment story in the sector, which is this page's thesis coming back in the mouth of the note that cut the target. Checked against the instrument, the sequence is clean: −2.24% to €6.97 on 23 September, the day of the note and the move contemporaneous German coverage attributes to it, then −6.17% to €6.54 on 24 September, then +1.38% to €6.63 on 25 September. Two sessions, −8.3%, €7.13 to €6.54. The second leg is still larger than a one-day-old target cut comfortably explains, so the caution this page kept was right in substance; but it had also assigned the 23 September fall to a dollar-led metals liquidation, which is a poor fit for a German bearing maker and is now superseded by a dated, named, corroborated cause. The claim audit takes its twenty-eighth row and the fifth against itself. The lesson is narrower than Friday's and worth separating from it: that one was a negative claim outliving its expiry, this one is a dismissal — a catalyst found, misdated, and filed away as too old to matter. Reaching for “a week old” from memory rather than reading the date off the note is how a live cause gets retired, and the check that would have caught it costs one click.
26 Sep 2026. A weekend news pass found the disclosure this page has spent three weeks saying did not exist: a shareholder is suing Nidec's founder for ¥28.7bn, and it was filed on 9 September. No market anywhere on this page traded on Saturday, so there are no new closes, correlations or column moves below — and the one thing that did change is a correction rather than a price. An individual shareholder instituted a derivative action in the Kyoto District Court (case 1749 of 2026) against two former directors, founder Shigenobu Nagamori and Hiroshi Kobe, demanding ¥28,730,558,300 plus delinquent charges under Article 462, paragraph 1 of the Companies Act. Nidec disclosed it on 10 September. The legal basis is the interesting part, because it is not the duty-of-care claim the August shareholder demands were pointing at: Article 462 is the capital-maintenance provision, and the suit says three specific capital returns — the treasury-share buybacks of September 2022 and February–March 2023, and the December 2022 midterm dividend — exceeded the distributable amount. That is the restatement arriving as a liability with a number on it. Restate those years downward and the distributable amount shrinks retroactively, which is what makes capital already paid out unlawful after the fact, so the filing due on 30 September — now four days away — is also the document that sizes this claim. Nidec says a suit against individuals will not affect its business performance, which is right about the P&L and beside the point about governance. Two things follow for this page. The claim audit takes a row against itself, its twenty-seventh and the fourth of its own. The interesting part is that “nothing disclosed since 4 September” was true when first written — it stopped being true on 10 September, and was then repeated for fifteen days after it expired. That is a different failure from getting a number wrong: a negative claim carries a silent expiry date, and every repetition of it is a fresh assertion about the disclosure record that has to be re-checked rather than inherited from the previous day's copy. And the argument built on it — that Nidec was being repriced on interpretation rather than information — survives, but by luck: the largest single gain anywhere on this page, +5.6% on 10 September, fell on the day the suit became public, and nothing in that session's tape suggests a ¥28.7bn claim against two individuals was what bid a ¥2,700 stock up five and a half points.
08 Method & caveats
Prices are last closes from Yahoo Finance chart data, taken as the most recent completed session in each venue, which means the as-of date usually differs by market. The ordinary weekday shape holds this run: Tokyo and the ASX are 30 Sep 2026, both closed before this refresh ran, while Xetra and the US are both 29 Sep 2026, because a 07:00 UTC refresh reaches them before either has opened. That is the plain midweek shape — a single calendar day between the Asian and Western lines, the narrowest this page gets. It does not make the columns quiet. The Western year-ago bases rolled across a weekend this run, from 26 to 29 September 2025, and one of them moved a long way in the step: Novonix's base rose 16.4%, from $12.20 to $14.20, so its twelve-month cell went from −78.0% to −81.2% on a session in which the stock fell 0.7%. Three points of that column are the calendar and none of it is the company. Read every column against its own base date, and treat a large move in one on a small move in the price as a date problem until shown otherwise. That is the calendar and not the companies. A venue date is still not a page date; read each column against its own. One trap, recorded on 19 Aug 2026: Yahoo’s daily bar array can lag a venue’s latest close, and that afternoon it still ended at the 18 August Tokyo session while the quote metadata already carried the 19 August close. Taking the bars at face value would have shown Harmonic Drive at ¥5,960 rather than ¥5,670, understating the fall by about five percentage points. The German feed keeps swallowing sessions, and the running tally is the argument for the method rather than against it. This run the feed handed back a clean sheet for the first time since late August. 24 September — the largest session of the series at −6.2%, and the only one closed on four independent routes rather than two — has backfilled at exactly €6.54, the figure the auction bar, previousClose, chartPreviousClose and an independent German quote service all carried at the time. That is sixteen holes, sixteen reconstructions, sixteen confirmed to the cent, and the clean sheet of the last two runs did not survive this one. A seventeenth hole opened on 29 September: Schaeffler's daily bar for that session returns null while 25, 28 and 30 September are all present, so the gap is one session deep and the procedure ran again. It closed on the two standard routes and they agree: regularMarketPrice at €6.40, stamped 17:35:15 CEST against a 17:30 close, on a request made before Xetra reopened; and previousClose at the same €6.40 on a five-minute request made after it reopened. The five-minute continuous series is the instructive part once more, because it stops at 17:25 showing €6.39 and never prints the auction — taking that tick instead of the auction would have published a €6.39 close and a 1.1% session rather than 0.9%, which is the same one-cent trap that made 22 September worth recording. Sixteen reconstructions confirmed and one open, and the procedure has now been used on seventeen cases and contradicted on none of them. The rule stands with its clause: when a German bar is missing, prefer the auction print, and where the intraday series stops short of the auction, previousClose on a request made after the venue reopens is the auction, not the last tick before it. The US feed's own hole has healed too. The 22 September daily bar was missing for four days for Ambarella, Lynas's ADR, Perpetua, Novonix, REMX, Compass Diversified and the iShares gold trust, while MP, USA Rare Earth and the SPDR gold trust carried it throughout — the same split, and mostly the same names, as the 28 August attrition recorded below. All seven were closed from previousClose and all seven have now returned, matching the reconstruction on every one: Ambarella at $67.06, REMX at $70.97, Perpetua at $24.76, Lynas at $10.33, Novonix at $2.85. That last one is the figure the claim audit's newest row turns on, and it is worth noting that the page's table had it right on the day and only the prose did not. The same gap hit an earlier run from the opposite direction, when the daily bars for every US name ended at 2 September while the metadata already carried the completed 3 September close. The metadata timestamp, converted to exchange-local time, is what decides whether a session is complete. Returns are computed on the local primary line, so no currency translation is embedded. This is a dated snapshot — the page cannot fetch live quotes and does not pretend to. It is refreshed daily at 07:00 UTC, and the compiled date in the masthead moves every time any content on this page changes, so that stamp is always the age of what you are reading.
28 Aug 2026: the corporate-action trap. Novonix changed its ADS ratio on 27 August, effectively a one-for-ten reverse split of the US line. Yahoo adjusted its quote metadata immediately — the 52-week high became $38.60 — but had not yet restated the daily close history, which still ran to $0.435. Read together, the two would have put Novonix 98.9% below its 52-week high, an invented 10× drawdown. Yahoo restated the history in stages, and for a fortnight put the seam in the wrong place: the 10× step sat between 21 and 24 August, three sessions before the change took effect on 27 August, so 24–26 August were carried at post-change prices they never traded at. That restatement has now completed. The whole series is on the post-change ratio, the misplaced step is gone, and a scan of two years of daily bars finds no jump larger than the two genuine ones from November 2024 and October 2025. The figures on this page were computed throughout with both sides on the post-change ratio, scaling closes at the seam the data actually contained rather than the one the corporate action implied — and they did not move when the vendor caught up, which is the only real test such a patch gets. Taken raw at the time, the same mismatch would have reported Novonix up 618% in a month, the earlier error wearing the opposite sign. Any screen mixing adjusted metadata with unadjusted bars across a corporate action produces the same class of error, silently.
A hole in the German feed, since filled. Yahoo's daily bars carried no 28 August close for any German single stock — Schaeffler, SAP, BMW and Continental all return null for that session, as do the Frankfurt, Munich, Düsseldorf and Hamburg lines, so it is one upstream gap rather than several — while the DAX index itself printed 26,570.0 that day. Taking the bars at face value would have held Schaeffler at its 27 August close of €7.35 and reported a 2.4% rise as a flat session. The €7.53 on this page is reconstructed from the intraday series for 28 August and cross-checked against an independent price history that agrees to the cent and matches Yahoo's own daily bars for 24–27 August exactly. A missing bar is not the same as an unchanged price. Yahoo backfilled the session later the same day at €7.53, matching the reconstruction to the cent.
The German hole is now a standing feature — and it heals itself, which is the useful part. It has recurred on eleven sessions since late August, and it is not Schaeffler-specific: SAP and Siemens return null for exactly the same days, so it is one upstream gap rather than a broken ticker. What has changed is that the earlier gaps have since backfilled, which turns them into a test of the patch. Yahoo now carries daily bars for 28 August and 1–4 September, and every one of them matches the figure this page reconstructed at the time to the cent: €7.53, €7.22, €7.02, €7.30 and €7.43. Five reconstructions, five exact confirmations, using two different routes — the neighbouring session's quote metadata, and the intraday series. The 7 and 8 September holes needed a third route, because both were still missing while Xetra had already opened on 9 September, so the metadata carried a live quote rather than either settlement and the standard 5-minute series stops at 17:25, before the closing auction. Requesting the 5-minute series with pre- and post-market bars included returns the auction print itself, stamped 17:35 CEST: €7.34 on 7 September and €7.43 on 8 September, the latter on 229,007 shares against a few thousand in each of the preceding bars — the volume signature of a closing auction rather than a stray tick. The 8 September bar has since backfilled at exactly €7.43, a sixth reconstruction confirmed; the 7 September bar has still not returned at all. The 9 September close, €7.40, came back a fourth way and the simplest one yet: the daily request, made before Xetra's 10 September auction, still carried 9 September's settlement in regularMarketPrice stamped 17:39 CEST, and the 5-minute request made at the same moment returned the same €7.40 in its previousClose field. Two independent fields, one figure — and the vendor has since backfilled that session at exactly €7.40, a seventh reconstruction confirmed. Taken from the bars alone the page would have carried Schaeffler at €7.43 and called a live session unchanged. 11 September behaved the same way: €7.19 in regularMarketPrice, stamped 17:35:12 CEST against a 17:30 close, while the daily bars stopped at 10 September — and that session has since backfilled at exactly €7.19, an eighth reconstruction confirmed. 14 September has since backfilled at exactly €6.95, a ninth reconstruction confirmed, and 15 September at exactly €6.78, a tenth — that one having been closed by two independent routes on the day it opened, the metadata auction stamp and the 17:35 five-minute bar on 575,656 shares, rather than after the fact. 16 September took a different second route again: €6.86 in regularMarketPrice stamped 17:38:13 CEST, with the five-minute series stopping at 17:25 and never printing the auction, so the corroboration came from previousClose on a request made after Xetra reopened — and that session has since backfilled at exactly €6.86, an eleventh reconstruction confirmed. So has 7 September, at exactly €7.34, a twelfth — the hole that stayed open for a fortnight, and the only one that needed the extended-hours request to close at all. 21 September closed the quickest of that group: the five-minute series printed the 17:30 auction at €6.99 on the day, matching regularMarketPrice at 17:35:12 CEST, and it has since backfilled at exactly €6.99, a thirteenth reconstruction confirmed. 22 September followed at exactly €7.13, a fourteenth — the most instructive of them, because the intraday series stopped at 17:25 showing €7.16 and the page took previousClose over it; had it taken the continuous print it would have published a 2.4% session rather than a 2.0% one. 23 September has now backfilled at exactly €6.97, a fifteenth. Sixteen holes, sixteen reconstructions, fifteen of them confirmed to the cent; only 24 September, the largest session of the lot at −6.2%, is outstanding — and it is the one closed on four routes rather than two. That is settled enough to be a procedure rather than a surprise — when a German bar is missing, take the auction print from the metadata timestamp and check it against a second field before believing it.
Bars that come and go. Novonix's daily history around its 27 August ADS ratio change is not stable between requests: 28 August read $3.51 at one run and had disappeared again, along with 26 and 27 August, by the next. Left alone, that would have moved the name's correlation and shown a four-session fall as a one-day move. The 28 August close is pinned to the verified figure so the series does not wobble with the feed. By 3 September the instability had spread well beyond Novonix: the whole 28 August US session had gone missing for Ambarella, REMX, Perpetua, Lynas and Compass Diversified while surviving for MP and USA Rare Earth — per-ticker attrition, not one dropped day. That has since healed. All five carry 28 August again, and Novonix's bar for it has returned at exactly $3.51, the figure this page pinned when it kept vanishing. The weekly series takes each ISO week's last available close, which absorbs this without shifting a week; where it removes a Friday, that week ends on the Thursday instead. Where a vendor's history changes underneath you, the fix is to record what you verified, not to re-derive it each run.
4 Sep 2026: a continuous futures series that is not continuous. This page has priced gold off GC=F, Yahoo's front-month gold contract, to sanity-check Perpetua's moves. That series silently rolled: GC=F now resolves to Gold Dec 26, and its own bar array still carries $4,366.3 for 2 September — the expiring contract — while the December contract closed that session at $4,414.6. Differencing across the roll would have reported a +4.0% gold session on 3 September against +1.9% for the bullion ETFs, which agree with each other to four hundredths of a point (SPDR Gold Shares +1.85%, iShares Gold Trust +1.88%). A futures move measured across a contract change is a spread, not a return. Gold figures on this page are now taken from the spot-tracking ETFs, which also settle on the same 16:00 ET clock as Perpetua and the miners they are being compared with — the earlier $4,366/oz reference has been dropped for the same reason.
Correlations use 104 completed weekly returns bucketed by ISO calendar week so Tokyo, Xetra and New York lines align despite different trading calendars. Weekly rather than daily specifically to avoid the time-zone lag that inflates or deflates cross-market daily correlation. The window runs to the completed week ended 25 Sep 2026 (ISO week 39); it was extended from 53 weeks on 14 Aug 2026, which shifted several tier-two figures down by 0.10–0.20 without changing any conclusion. The basket is equal-weighted and rebalanced weekly — the basket return for a week is the mean of the six tier-one names' returns for that week — and stating that is not pedantry, because the same six names held without rebalancing give 0.3877 against the rebalanced 0.3581 on the current window. This page published 0.41 through 16 Sep 2026 without naming the construction, which made the figure impossible to rebuild from this note; the claim audit carries the full account. Every figure is cross-checked against a second bucketing method before publication, and on this run the two agreed to four decimal places on every series. The window has not moved for two runs. ISO week 39 closed on Sunday 27 September, so Monday's refresh advanced the end to the week ended 25 September, and Tuesday's and Wednesday's both sit inside week 40 and add nothing: the end will next advance on the first refresh after Sunday 4 October. Every correlation on this page is therefore identical to Monday's, which is a property of the window rather than a coincidence of the tape, and is the reason the figures below are quoted rather than recomputed as news. On the current window the figures are basket-to-REMX 0.3581, Schaeffler 0.5909 to the basket and Lynas 0.6225 to REMX. This run both bucketing methods were recomputed from scratch on fresh data and agreed to within 0.010 across all fourteen series — not to four decimals as in previous runs, and the reason is worth stating: the native-weekly method's own window ends one ISO week later than the daily-rebucketed one, so the two are no longer measuring an identical span. Agreement inside a hundredth across every series is the confirmation; identical decimals would have been the wrong thing to expect. That is the reason a window that moves has to be re-read everywhere it is quoted rather than sampled in one place. A correction to this note while we are here: it previously said a Saturday refresh is the only one that can advance the window's end. It cannot. ISO weeks run Monday to Sunday and the in-progress week is excluded, so Saturday's run still sits inside the current week and adds nothing; the end advances on the first refresh after a Sunday, which on an ordinary schedule means Monday's. The start, separately, rolls forward on its own, which was the lesson of 16 Sep 2026. There is a request-shaped trap underneath all of it: a two-year daily request spans 105 ISO weeks including the in-progress one, which after excluding it yields 103 weekly returns, not 104. Anchoring a true 104-return window needs a three-year request, and that is how the figures here are built. The four-week comparison between the tiers uses a different construction again, and it is now stated: the basket's 1m figure is the mean of the six tier-one names' own 1m cells — equal-weighted, not rebalanced, each name on its own venue's 30-day lookback — so a reader can rebuild it from the table above. This page previously quoted 5.2% for that figure and it cannot be reproduced on any construction tried; the claim audit carries that too. Correlation measures co-movement, not causation — treat 0.36 as "these travel together loosely," not as a precise constant.
A correction worth repeating, and a bigger one below it. Schaeffler's correlation to the robotics basket was originally computed on the SFFLY ADR and came out at 0.16. On the liquid Xetra line it is 0.60. Thin ADRs do not merely lag — they can invert a conclusion. Every correlation on this page now uses the primary listing.
18 Aug 2026 correction: the alignment bug. Every correlation figure this page had published through 17 Aug 2026 was computed from Yahoo's native weekly bars (interval=1wk). Those bars anchor Tokyo and Xetra weeks roughly one calendar week off from New York's — confirmed directly by comparing native bars against daily closes re-bucketed into true ISO weeks, which showed a consistent one-week offset for every Tokyo and Xetra ticker tested but not for US tickers. Because the tier-one basket is four-sixths Japanese names, this silently corrupted every cross-region figure: the robotics basket's correlation to REMX read 0.19 on the misaligned data and about 0.40 once daily closes were re-bucketed by calendar week (0.36 on the current window, weekly-rebalanced) — confirmed by two independent methods (ISO-week bucketing and Friday-anchored resampling) that agree to three decimal places. Correlations computed entirely within one region (e.g. TDK, a Tokyo name, against the mostly-Tokyo basket) barely moved, which is exactly what a same-direction shift on both sides of a comparison would produce, and is why the bug went unnoticed until a cross-region figure was checked against an independent method. Every correlation on this page, in every table, chart and paragraph, is now computed from daily closes re-bucketed into ISO calendar weeks.
Use the primary listings. The ADRs quoted in the source post are thin: HSYDF traded 200 shares in a session, YASKY 513, NCTKY 1,350. NJDCY has not printed since February. Prices on those lines can sit stale for days and will not reflect Tokyo. Where an ADR is the only access route, expect a spread.
Not investment advice. This is a research snapshot assembled from public filings, company releases and press reporting, built to check a social-media thesis rather than to endorse it.