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REJECTED

"Universe Expansion — full S&P cross-section minus flagship stride-10"

2026-08-23

446 names | 100,000 capital | region-A config | identical walk-forward protocol to holdout_multiseed (12mo retrain, embargo 50, top-28 features, regression h5). Cross-sectional ranks computed over the FULL pool.

Portfolio results (breaker 0.50, live setting)

Reference points

studyuniverseCAGRPFMaxDD
flagship baseline (flagship_resurrection)51 stride names+17.1%1.4636.7%
multiseed range (holdout_multiseed)3x20 unseen names+7.0..10.2%1.24..1.26~40-44%
expansion (this run)446 names+0.5%1.0449.1%

Year by year (0.50 breaker)

yearreturn
2006-0.12%
2007-1.36%
2008-1.36%
2009+34.91%
2010-0.36%
2011-21.64%
2012+7.63%
2013+5.55%
2014-6.09%
2015-3.53%
2016-1.09%
2017+19.91%
2018-11.79%
2019+21.75%
2020+9.02%
2021+36.99%
2022-33.99%
2023+1.00%
2024-11.00%
2025+4.72%
2026-11.10%

35% lock contrast

Verdict

MIXED / INCONCLUSIVE — 446-name portfolio returned +10.31% (CAGR +0.50%, PF 1.04) vs SPY +747.83%.

Total time: 18.7 min