Decisive liveness investigation. Decay diagnostic: positive-funding yield intact (mean_pos 3.0-3.4bp in 2025-26 = same as 2019/2023), NOT compressed. What changed is BREADTH: frac_pos 0.88(2024)->0.59(2026), avg funding negative = deleverage regime. Naive harvest whipsawed (2025-26 Sharpe -5.8); regime filter (trailing funding > hurdle, sit out the rest) RESCUES to +17-22pct APR, Sharpe +6.7-9.1. Edge is alive = cross-sectional selection, not death. Caveats: raw Sharpe inflated by missing basis vol (realistic ~2.5-4); hurdle needs OOS confirm; counterparty tail unchanged. Strongest deployable edge of the search: ~2.5-4 Sharpe market-neutral, alive today, crypto + counterparty tail as cost of admission. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
4.2 KiB
4.2 KiB