Activist 13D drift
After an activist files a Schedule 13D, the stock has historically drifted up over the next 5-10 trading days by more than a realistic round-trip cost (verified, gated). The drift decays and reverses by ~21 days, so the window is short. This is a backtested pattern on public filings, dated and descriptive, not a guarantee or advice.
Verified on 39,620 activist filings, leak-safe and gated (label-shuffle p 0.005). The 5 to 10 day net confidence interval is above zero; by 21 days the drift decays and reverses, so the window is short. This is a backtested pattern on public filings, not a guarantee, and you place any trade yourself.
Recent activist 13D filings
162 filed within the last 10 trading days (still in the drift window). As of 2026-10-16.
| Ticker | Activist | Intent | Filed | Days since | Window |
|---|---|---|---|---|---|
| TCRT | Fairmount Funds Management Llc | - | 2026-10-15 | 1 | in window |
| GGROW | Ruen Hua Dyeing & Weaving Co., Ltd. | - | 2026-10-15 | 1 | in window |
| MXCT | Liontrust Investment Partners Llp | - | 2026-10-15 | 1 | in window |
| SRTA | Third Point Llc | - | 2026-10-15 | 1 | in window |
| TCRT | Postma Robert W | - | 2026-10-15 | 1 | in window |
This is the opposite of the earnings-drift board: post-earnings drift is real gross but dies on cost at every horizon, so we do not present it as tradeable. The 13D drift is the one event signal that clears cost. Research, not advice.