Weekly Observatory Report — 2026-10-09
Japan small caps, checked every night — week of 2026-10-09.
Every listed Japanese equity, checked nightly. As of the 2026-10-09 close, 4 names are on the watchlist (pullbacks our rules classify as healthy) and 110 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 | 4,104.8 | +0.3% w/w |
| Growth 250 (small-cap growth) | 806.6 | +1.1% w/w |
| USD/JPY (as of 2026-10-08) | ¥158.28 | +0.30 w/w |
| JGB 10-year yield (as of 2026-10-08) | 3.09% | -0bp w/w |
| VIX (as of 2026-10-07) | 15.1 | -1.26 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 We do not publish forecasts.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: 4 (2 core-size / 2 small & emerging). Most represented sectors: Information & Communication (2), Electric Power & Gas (1), Retail Trade (1). Warning flags: 110.
Watchlist notables (supply-demand tier A/B)
| Ticker | Name | Sector | Supply-demand tier | Business quality | Balance-sheet safety | Valuation |
|---|---|---|---|---|---|---|
| 5889 | Japan Eyewear Holdings Co.,Ltd. | Retail Trade | B | High | Medium | 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 |
|---|---|---|---|
| 7564 | WORKMAN CO.,LTD. | +2.5% | Still monitoring |
| 9552 | Quants Research Institute Holdings,Inc. | +13.9% | Rebound confirmed |
| 4058 | Toyokumo,Inc. | +5.9% | Rebound confirmed |
| 350A | DIGITAL GRID Corporation | +2.3% | Still monitoring |
| 3659 | NEXON Co.,Ltd. | -1.7% | Still monitoring |
| 3854 | I'LL INC | +4.7% | Still monitoring |
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 2026-10-09 close | Rules: crash:v1 / market_context:v1 | Body SHA-256: d1e65dc845e69ebe (hash of the content above this line)