Weekly Observatory Report — 2026-10-23
Japan small caps, checked every night — week of 2026-10-23.
Every listed Japanese equity, checked nightly. As of the 2026-10-23 close, 50 names are on the watchlist (pullbacks our rules classify as healthy) and 263 carry warning flags.
The full report — market context, the watchlist with tiers, and the scorecard of the prior issue's entries — is free to read during our open period.
Market context
| Level | Week change | |
|---|---|---|
| TOPIX | 3,965.8 | -2.5% w/w |
| Growth 250 (small-cap growth) | 754.6 | -3.2% w/w |
| USD/JPY (as of 2026-10-22) | ¥157.05 | -0.93 w/w |
| JGB 10-year yield (as of 2026-10-22) | 2.91% | -3bp w/w |
| VIX (as of 2026-10-21) | 16.7 | -0.19 w/w |
Reference data only — TOPIX/Growth250 from exchange data, USD/JPY from ECB reference rates (FRED fallback), JGB from Ministry of Finance, VIX from FRED. We do not publish forecasts.
This week's observatory
Watchlist: 50 (24 core-size / 26 small & emerging). Most represented sectors: Information & Communication (12), Services (11), Electric Appliances (9). Warning flags: 263.
Watchlist notables (supply-demand tier A/B)
| Ticker | Name | Sector | Supply-demand tier | Business quality | Balance-sheet safety | Valuation |
|---|---|---|---|---|---|---|
| 330A | TalentX Inc. | Information & Communication | A | High | High | Cheap |
| 9562 | Business Coach Inc. | Services | A | High | High | Cheap |
| 7409 | AeroEdge Co.,Ltd | Transportation Equipment | B | High | High | Cheap |
Tier reflects margin-trading supply and demand (A = light, B = neutral); it is not a ranking. Labels are systematic, not ratings. These are observations, not recommendations.
Scorecard — how last week's entries actually did
| Ticker | Name | Since entry | Status |
|---|---|---|---|
| 7373 | Aidma Holdings,Inc. | -2.1% | Still monitoring |
| 247A | Ai ROBOTICS INC. | -7.4% | Did not hold |
| 7711 | SUKEGAWA ELECTRIC CO.,LTD. | -8.7% | Did not hold |
| 6356 | NIPPON GEAR CO.,LTD. | -11.9% | Did not hold |
| 285A | Kioxia Holdings Corporation | -4.6% | Still monitoring |
| 519A | Basic Inc. | -9.8% | Did not hold |
Return from the prior issue's as-of close to this issue's. Every issue includes this scorecard — wins and losses, timestamped. Nothing is deleted retroactively.
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Tsukiyo Research provides data and analysis for informational purposes only. Nothing here is investment advice or a recommendation to buy or sell any security. We are not a registered investment advisor in any jurisdiction. Past performance does not guarantee future results.
Data as-of 2026-10-23 close | Rules: crash:v1 / market_context:v1 | Body SHA-256: 921861d4374d7d7f (hash of the content above this line)