# Overlay Strategy Leaderboard
_Updated: 2026-03-27T03:16:32.096793+00:00_

_This board is separate from the default single-book leaderboard. Overlay rows are book-of-books evaluations and are not directly comparable to single-book `SQS` rows._

_`SQS` here is overlay official SQS: common-window overlay score with a stress OOT gate. `T.*` columns are common-window overlay metrics._

| # | Overlay | SQS | [T]Ret% | [T]Ann% | [T]DD% | Stress Ret% | Stress DD% | Stress Sharpe | Date |
|---|---------|-----|----------|----------|--------|-------------|------------|---------------|------|
| 1 | return_book_overlay_v3 | 90.2 | +175.6 | +28.6 | 4.5 | +6.0 | 5.4 | +0.67 | 2026-03-26 |
| 2 | return_book_overlay_v3b | 87.7 | +169.5 | +27.9 | 5.0 | +7.4 | 5.8 | +0.80 | 2026-03-26 |

## Recent Overlay Entries
### IMP-0738 (2026-03-26) — return_book_overlay_v3b
Hypothesis: Balanced overlay variant with 50/50 neutral allocation between v6.221 and v6new.54.
Verdict: **UNKNOWN** (SQS 87.7)

### IMP-0737 (2026-03-26) — return_book_overlay_v3
Hypothesis: Book-of-books overlay using v6.221 as stress fallback and v6new.54 as normal-regime book.
Verdict: **UNKNOWN** (SQS 90.2)