per-stock model-accuracy decomposition

9214.T

computed asof 2026-08-07T09:15:52

read this first — not a buy signal

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.

Decomposes ml-factor-lgbm-9f-jp-growth. Standalone walk-forward run of the same LightGBM 9-factor family on the jp-listed universe (~4,100 tickers); the referenced record's verdict applies to the jp-growth universe only.

Accuracy (median across grid)

metric	median	p25 – p75	n
Hit rate · LONG	0.7463	0.7070 – 0.7863	12
Hit rate · SHORT	0.9068	0.8619 – 0.9376	12
Avg return · LONG (bps)	79.6	-6.3259 – 136.2	12
Avg return · SHORT (bps)	1131.1	963.4 – 1329.1	12
Selection rate · LONG	0.0242	0.0175 – 0.0277	12
Selection rate · SHORT	0.0107	0.0083 – 0.0152	12

Hit rate ≈ 0.5 means the model's picks on this stock were near coin-flip. Returns in bps per trade (1 bps = 0.01%).

PnL contribution

long

19.1

short

156.3

total

175.4

appearances 118464 · LONG 2698 · SHORT 1395

Research, not investment advice. Metrics describe model–stock fit, not the stock's merit.