per-stock model-accuracy decomposition

6176.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	0.4863	0.4423 – 0.5077	12
Hit rate · SHORT	0.5099	0.3964 – 0.5926	12
Avg return · LONG (bps)	116.1	60.8 – 146.9	12
Avg return · SHORT (bps)	90.6	42.7 – 153.0	12
Selection rate · LONG	0.0062	0.0053 – 0.0070	12
Selection rate · SHORT	0.0053	0.0027 – 0.0068	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

27.7

short

22.6

total

50.3

appearances 493056 · LONG 3262 · SHORT 2384

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