SteadyTapeQuantitative Market Research

A/D Capitulation

Median 1M return: +1.9%, 68% win rate.

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9:1 advance/decline capitulation events on SPY/QQQ baskets - washout-low signals.

As of
2026-09-14
SPY Basket
Normal (A/D=1.2×)
292 adv / 234 dec
Nasdaq Basket
Normal (A/D=2.8×)
56 adv / 20 dec
SPY 10:1 Up Days
260
SPY 10:1 Down Days
262
Dual-Confirm
375
B2B Thrusts
135

When to run this study

Run during or immediately after sharp market selloffs or relief rallies. A 9:1 down day during a crash and a subsequent 9:1 up day together are among the most reliable capitulation + reversal signals in the historical record. Dual-confirm signals (both SPY basket and Nasdaq basket hit 9:1) are the strongest.

Historical results

SPY Forward Returns after 10:1 Up Days (N=260)

PeriodNWin%AvgMedianBestWorst
1D26050-0.1503.97-4.99
3D26056.20-0.040.225.95-7.48
1W26058.10-0.110.278.33-17.24
2W26061.200.120.8712.48-22.40
1M26068.501.061.9115.17-21.92
3M26071.503.645.1332.07-23.91
6M26079.207.518.6944.47-37.30