per-stock model-accuracy decomposition

3670.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	0.1030	0 – 0.4250	10
Hit rate · SHORT	0.7934	0.7510 – 0.9342	12
Avg return · LONG (bps)	-90.1	-203.8 – -7.8898	10
Avg return · SHORT (bps)	643.9	498.3 – 851.7	12
Selection rate · LONG	0.0006	0.0004 – 0.0035	12
Selection rate · SHORT	0.0623	0.0441 – 0.0701	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

-1.2333

short

118.4

total

117.2

appearances 32256 · LONG 113 · SHORT 1975

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