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rejectedregime_dependent· equity· anomaly· factor· liquidity· turnover

Turnover Factor (JP Growth Stocks)

slug: turnover-jp-growth

Turnover Factor (JP Growth Stocks) backtest. Median Sharpe across 320 parameter sets is -0.01. p-value is 0.41. Max DD is -26.2%. Period: 2022-05-02 to 2026-09-01. Best Sharpe +1.29 is not the representative figure.

Verdict: rejected. The median reaches neither promising (Sharpe > 0.5 and p-value < 0.05) nor marginal (Sharpe > 0.05 and best p-value < 0.10). Results split across up, flat, and down markets, so the median is not stable.

Performance summary

Sharpe (median)
-0.01
Max DD
-26.2%
Win rate
—
Alpha (ann.)
—
p-value
0.41
backtest period: 2022-05-02 → 2026-09-01
Sharpe across 320 grid runs:median -0.01best 1.29 (not representative)worst -1.05p25–p75 -0.29–0.42

Hypothesis

Datar, Naik, Radcliffe (1998): low turnover stocks outperform. Turnover (volume/avg_volume) proxies investor attention and liquidity. LONG lowest turnover, SHORT highest turnover.

Why it didn't work

Across 320 grid combinations, median Sharpe=-0.01, best=1.29. Primary failure mode: regime_dependent.

Facts (5)

Best grid Sharpe ratio is 1.29 (p=0.0083).
period 2022-05-02–2026-09-01; cost=5bps
sharpe_ratio1.29
cite ↗ /cite/turnover-jp-growth-fact-best-sharpevia r-turnover-jp-growth-0080
Median Sharpe across 320 grid runs is -0.01.
Full grid of 320 parameter combinations.
sharpe_ratio-0.01
cite ↗ /cite/turnover-jp-growth-fact-median-sharpe
Median Sharpe in DOWN regime is 2.85 across 320 runs.
Regime=DOWN, N225 SMA20/SMA60 classification.
sharpe_ratio2.85
cite ↗ /cite/turnover-jp-growth-fact-regime-down
Median Sharpe in FLAT regime is -0.21 across 320 runs.
Regime=FLAT, N225 SMA20/SMA60 classification.
sharpe_ratio-0.21
cite ↗ /cite/turnover-jp-growth-fact-regime-flat
Median Sharpe in UP regime is 0.18 across 320 runs.
Regime=UP, N225 SMA20/SMA60 classification.
sharpe_ratio0.18
cite ↗ /cite/turnover-jp-growth-fact-regime-up

Runs (30)

runparamssharpeUPFLATDOWN
formation_days=10, holding_days=1, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0000
cost_bps: 5
n_stocks: 5
regime_gate: false
+0.83+2.28+0.37+8.34
formation_days=10, holding_days=1, n_stocks=5, cost_bps=5, regime_gate=True
r-turnover-jp-growth-0001
cost_bps: 5
n_stocks: 5
regime_gate: true
+0.46+0.39+0.37+8.34
formation_days=10, holding_days=1, n_stocks=5, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0002
cost_bps: 10
n_stocks: 5
regime_gate: false
+0.70+2.12+0.26+7.77
formation_days=10, holding_days=1, n_stocks=5, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0003
cost_bps: 10
n_stocks: 5
regime_gate: true
+0.35+0.29+0.26+7.77
formation_days=10, holding_days=1, n_stocks=50, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0012
cost_bps: 5
n_stocks: 50
regime_gate: false
+0.63+1.29+0.18+7.49
formation_days=10, holding_days=5, n_stocks=5, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0018
cost_bps: 10
n_stocks: 5
regime_gate: false
+0.58+1.04+0.33+4.25
formation_days=10, holding_days=10, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0032
cost_bps: 5
n_stocks: 5
regime_gate: false
-0.05+0.32-0.25+0.73
formation_days=10, holding_days=10, n_stocks=50, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0046
cost_bps: 10
n_stocks: 50
regime_gate: false
-1.01-0.63-1.17+0.06
formation_days=10, holding_days=20, n_stocks=50, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0060
cost_bps: 5
n_stocks: 50
regime_gate: false
-0.25-0.01-0.45+2.44
formation_days=10, holding_days=60, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0064
cost_bps: 5
n_stocks: 5
regime_gate: false
+0.01+1.00-0.30+0.39
formation_days=10, holding_days=60, n_stocks=20, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0075
cost_bps: 10
n_stocks: 20
regime_gate: true
-0.55-0.71-0.63+2.89
formation_days=20, holding_days=1, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0080
cost_bps: 5
n_stocks: 5
regime_gate: false
+1.29+2.20+0.80+4.85
formation_days=20, holding_days=1, n_stocks=20, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0090
cost_bps: 10
n_stocks: 20
regime_gate: false
+0.72+1.55+0.22+23.07
formation_days=20, holding_days=5, n_stocks=20, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0104
cost_bps: 5
n_stocks: 20
regime_gate: false
+0.79+1.78+0.19+4.60
formation_days=20, holding_days=10, n_stocks=10, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0118
cost_bps: 10
n_stocks: 10
regime_gate: false
-0.13-0.49-0.08+1.31
formation_days=20, holding_days=10, n_stocks=50, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0126
cost_bps: 10
n_stocks: 50
regime_gate: false
-1.05-1.16-1.13+2.82
formation_days=20, holding_days=20, n_stocks=10, cost_bps=5, regime_gate=True
r-turnover-jp-growth-0133
cost_bps: 5
n_stocks: 10
regime_gate: true
+0.32-1.23+0.69+5.39
formation_days=20, holding_days=60, n_stocks=5, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0147
cost_bps: 10
n_stocks: 5
regime_gate: true
-0.39-0.17-0.53+0.12
formation_days=40, holding_days=1, n_stocks=5, cost_bps=5, regime_gate=True
r-turnover-jp-growth-0161
cost_bps: 5
n_stocks: 5
regime_gate: true
+0.46+0.09+0.45+5.88
formation_days=40, holding_days=1, n_stocks=50, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0175
cost_bps: 10
n_stocks: 50
regime_gate: true
-0.04-0.31-0.11+5.11
formation_days=40, holding_days=5, n_stocks=50, cost_bps=5, regime_gate=True
r-turnover-jp-growth-0189
cost_bps: 5
n_stocks: 50
regime_gate: true
+0.21+0.36-0.13+2.91
formation_days=40, holding_days=10, n_stocks=20, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0203
cost_bps: 10
n_stocks: 20
regime_gate: true
-0.06+0.16-0.18+0.30
formation_days=40, holding_days=20, n_stocks=20, cost_bps=5, regime_gate=True
r-turnover-jp-growth-0217
cost_bps: 5
n_stocks: 20
regime_gate: true
+0.50-0.04+0.59+2.07
formation_days=40, holding_days=60, n_stocks=10, cost_bps=10, regime_gate=True
r-turnover-jp-growth-0231
cost_bps: 10
n_stocks: 10
regime_gate: true
-0.27-0.66-0.34+6.77
formation_days=60, holding_days=1, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0240
cost_bps: 5
n_stocks: 5
regime_gate: false
+0.69+1.31+0.30+5.64
formation_days=60, holding_days=1, n_stocks=10, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0246
cost_bps: 10
n_stocks: 10
regime_gate: false
+0.75+1.41+0.31+9.47
formation_days=60, holding_days=5, n_stocks=10, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0260
cost_bps: 5
n_stocks: 10
regime_gate: false
+0.55+1.99-0.11+2.67
formation_days=60, holding_days=10, n_stocks=5, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0274
cost_bps: 10
n_stocks: 5
regime_gate: false
-0.15+0.84-0.37-1.13
formation_days=60, holding_days=20, n_stocks=5, cost_bps=5, regime_gate=False
r-turnover-jp-growth-0288
cost_bps: 5
n_stocks: 5
regime_gate: false
+0.19+1.22-0.25+0.31
formation_days=60, holding_days=20, n_stocks=50, cost_bps=10, regime_gate=False
r-turnover-jp-growth-0302
cost_bps: 10
n_stocks: 50
regime_gate: false
-0.56-0.62-0.75+1.72

Target universe

Tokyo Stock Exchange Growth Market, ~495 stocks, tv >= 30M JPY
source: qbuntu-analysis · kabu STATION REST API + J-Quants daily bars
computed asof: 2026-09-24T21:54:27
view as Markdown ↗view as JSON ↗license: CC-BY-4.0

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