Factor IC Test (39 rolling windows, ~503 US stocks)

FactorIC MeanICIRIC t-statL/S ReturnSignal
Momentum (MOM)0.2242.7016.62-8.07%🟒 Strong Positive
Volatility (VOL)0.1321.056.48-7.61%🟒 Positive
Size (SIZE)0.0481.257.70-2.06%🟒 Positive
Book-to-Price (BP)0.0060.080.480.82%βšͺ Insignificant
Earnings Yield (EP)-0.062-0.74-4.573.87%πŸ”΄ Significant Inverse
FCF Yield-0.059-1.43-8.793.04%πŸ”΄ Significant Inverse
ROE-0.041-1.23-7.581.11%πŸ”΄ Significant Inverse

Key Findings

  • Momentum stands alone: MOM factor ICIR 2.70, 100% positive IC rate. Q5 avg return 7.95% vs Q1 -0.12%. Over 39 rolling windows, momentum has never failed β€” the most reliable alpha source in current markets.
  • Value factors under siege: EP, FCF Yield, and ROE all show significantly negative ICs. FCF Yield ICIR -1.43 is the weakest factor β€” low-FCF growth stocks consistently outperform high-FCF value plays.
  • High vol > Low vol: VOL factor IC mean 0.132. High-volatility Q5 returned 8.15% vs low-vol Q1 at 0.54%. The market is chasing beta.
  • Large-cap premium: SIZE factor ICIR 1.25, large caps continue outperforming small caps.

Factor IC

Sector Momentum Decomposition (mom factor Γ— GICS sectors)

SectorIC MeanICIRIC Pos. RateQ5-Q1 Spread
Info Tech0.5242.58100%-28.54%
Industrials0.2662.88100%-7.14%
Financials0.3092.63100%-7.19%
Consumer Discretionary0.2522.11100%-6.21%
Consumer Staples0.2091.3487%-4.67%
Utilities0.1991.0177%-0.63%
Real Estate0.1240.8474%-3.83%
Health Care-0.128-1.2115%+7.51%

Sector Insights

  • Info Tech shows the strongest momentum with IC mean 0.524. Q5 returned 27.19% vs Q1 -1.35%, a -28.54% spread. AI-related names continue dominating capital flows.
  • Industrials and Financials show robust momentum with ICIR above 2.6, Q5 significantly outperforming.
  • Health Care reversal: the only sector with negative IC (ICIR -1.21). Past winners (Q5) returned -2.66% while past losers (Q1) bounced +4.84%. Capital is rotating out of defensive healthcare into cyclicals/tech.

Sector Momentum

Summary

Market style is extremely skewed toward momentum + growth + large-cap. Value factors are universally failing β€” a classic “trending market” rather than “mean-reversion market.” Info Tech and Financials are the momentum battlegrounds; Health Care shows clear capital rotation signals. Strategy-wise, ride the trend rather than fading into value.

Based on daily TTM financial panels covering S&P 500 constituents. 39 rolling windows β‰ˆ 2 months of trading days.