walkforward: 2019→2026 OOS exam, 4 TFs @ $0.65 — books + manifest
26 rolling folds per TF (train 12mo / test 3mo / step 3mo) over
2019-01-01→2026-08-07 on fresh Oanda history (5 parquets, sha256s in
manifest). Aggregated OOS: M5 +126.5R PF 1.35 (11/26 folds flagged),
M15 +139.2R PF 1.18 (9/26), H1 +33.3R PF 1.15 (13/26), H4 +33.3R
PF 1.52 (9/26). Flagged folds cluster 2020H2–2023; 2023-10+ nearly
uniformly positive — corroborates the "earns mainly 2024+" re-pin
finding. Robustness read only: NOT a new baseline, nothing tuned.
Runs captured at 1c264d5 + the walk-forward diff (recorded as
dirty + diff sha256 in manifest.json); compare_baseline passed 32/32
immediately before the runs.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017FBjfomAipxvPWwRJEDDyJ
Harwinder Sekhon
68dc76a5f1