# 大日光・エンジニアリング (6635.T) — per-stock model accuracy

> Model predictability decomposition: measures how accurately the ml-factor-lgbm-9f-jp-growth model family predicts this stock's returns within the jp-listed universe. High hit_rate_long does NOT mean 'good stock to buy' -- it means 'the model historically predicted this stock well when selecting it LONG'. This is a property of model-stock fit, not intrinsic stock quality.

- **Name**: 大日光・エンジニアリング
- **Sector**: 電機・精密
- **Universe**: jp-listed
- **Decomposes**: `ml-factor-lgbm-9f-jp-growth` (strategy verdict: marginal) — https://qbuntu.ai/strategies/ml-factor-lgbm-9f-jp-growth
- **Computed asof**: 2026-10-01T02:33:09
- **HTML**: https://qbuntu.ai/stocks/6635.T
- **JSON**: https://qbuntu.ai/v1/stocks/6635.T
- **License**: CC-BY-4.0

## Accuracy (median across grid)

Median LONG hit rate is 0.3753 — below a coin flip.

| metric | median | p25 | p75 | n |
|---|---:|---:|---:|---:|
| hit_rate_long | 0.3753 | 0.2033 | 0.5179 | 12 |
| hit_rate_short | 0.8849 | 0.8103 | 0.9412 | 12 |
| avg_return_long_bps | -147.0 | -288.2 | 17.3 | 12 |
| avg_return_short_bps | 849.0 | 749.0 | 955.8 | 12 |
| selection_rate_long | 0.0045 | 0.0027 | 0.0059 | 12 |
| selection_rate_short | 0.0074 | 0.0060 | 0.0095 | 12 |

Hit rate ≈ 0.5 means the model's picks on this stock were near coin-flip. Returns in bps/trade. Metrics with n = 0 are omitted; n < 5 is a thin sample.

## PnL contribution

- long: -13.1
- short: 103.8
- total: 90.7
- appearances: LONG 675 / SHORT 1239 of 158208

---

Research, not investment advice. These metrics describe model–stock fit, not the stock's merit.
Cite as: qbuntu (2026). 6635.T per-stock accuracy. https://qbuntu.ai/stocks/6635.T