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成分合成ポートフォリオ(東証グロース)のバックテスト

Best Component Portfolio (JP Growth Stocks)

slug: portfolio-best-components-jp-growth

東証グロース(約495銘柄)で成分合成ポートフォリオをバックテストした。3通りの中央値 Sharpe は +1.43。p-value は 0.13。Max DD は -6.5%。期間は 2024-07-01〜2025-06-30。最良 Sharpe +1.63 は代表値ではない。

判定は rejected。中央値は promising(Sharpe > 0.5 かつ p-value < 0.05)にも marginal(Sharpe > 0.05 かつ最良 p-value < 0.10)にも届いていない。主因は no_edge。レジーム・取引回数・コストには分類されず、中央値が採用ラインに届いていない。

成績の中央値

Sharpe(中央値)
+1.43
Max DD
-6.5%
勝率
—
Alpha(年率)
—
p-value
0.13
期間: 2024-07-01 → 2025-06-30
3通りの Sharpe:中央値 1.43最良 1.63 (代表値ではない)最悪 0.00p25–p75 0.72–1.53

仮説

原文は英語。

A multi-strategy portfolio composed of Phase 2c/2d best variants (ml-factor best version + FLAT-only reversal + fx-carry + pair-trading) achieves higher regime stability than any single component. Phase 2b showed regime-conditional weighting improved UP-regime Sharpe from -1.11 to 0.36.

採用しなかった理由

Across 3 grid combinations, median Sharpe=1.43, best=1.63. Primary failure mode: no_edge.

検証ファクト (5)

Best grid Sharpe ratio is 1.63 (p=0.11).
period 2024-07-01–2025-06-30; cost=5.0bps
sharpe_ratio1.63
cite ↗ /cite/portfolio-best-components-jp-growth-fact-best-sharpevia r-portfolio-best-components-jp-growth-0007
Median Sharpe across 3 grid runs is 1.43.
Full grid of 3 parameter combinations.
sharpe_ratio1.43
Median Sharpe in DOWN regime is 2.65 across 3 runs.
Regime=DOWN, N225 SMA20/SMA60 classification.
sharpe_ratio2.65
Median Sharpe in FLAT regime is 1.61 across 3 runs.
Regime=FLAT, N225 SMA20/SMA60 classification.
sharpe_ratio1.61
Median Sharpe in UP regime is 0.53 across 3 runs.
Regime=UP, N225 SMA20/SMA60 classification.
sharpe_ratio0.53

検証ラン (3)

runparamssharpeUPFLATDOWN
method=equal_weight
r-portfolio-best-components-jp-growth-0001
method: "equal_weight"
+1.43+0.49+1.71+2.44
method=risk_parity
r-portfolio-best-components-jp-growth-0004
method: "risk_parity"
0.00———
method=regime_conditional
r-portfolio-best-components-jp-growth-0007
method: "regime_conditional"
+1.63+0.57+1.52+2.85

対象ユニバース

Tokyo Stock Exchange Growth Market, ~495 stocks, tv >= 30M JPY
source: qbuntu-analysis · kabu STATION REST API + J-Quants daily bars
computed asof: 2026-09-24T02:22:16

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