Pre-reg: eqmom resid top-50/H21 formations; BELOW/ABOVE by close vs session-VWAP; next-open 21-session forward. Split amended to IS<2023/OOS>=2023 (1Min starts 2020-07; house split yields zero IS). Adopt bar: OOS spread >= +0.15%/entry, p<0.05, IS same sign.
Entries kept: 274 (164 OOS).
Scoreboard (mean 21d forward per entry)
| Segment | BELOW | N | ABOVE | N | Spread | p |
|---|---|---|---|---|---|---|
| IS | -7.372% | 106 | +8.053% | 4 | -0.1542 | 0.0165 |
| OOS | +1.029% | 124 | +3.390% | 40 | -0.0236 | 0.4085 |
Verdict: NO-SIGNAL (OOS spread -0.0236/entry (need >=+0.0015); p 0.4085 (need <0.05); IS spread -0.1542 (need same sign))
Time 37s.