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The Activist Investor Insider

The archive

Every edition

A new edition publishes on the 1st and 15th of each month at 7:00 a.m. ET, covering SEC filings from the previous two weeks. Ranks 1–5 are for premium subscribers at first; each edition becomes free in full 30 days after it publishes. 2 editions are still within that window.
  1. November 1, 2026Filings dated October 15–31, 20267 of the 24 activists we track disclosed moves in SEC filings dated October 15–31, 2026, including 3 new 13D campaigns. Ranks 1–5 are for Premium Subscribers until December 1, 2026.Top 5 premium
  2. October 15, 2026Filings dated October 1–14, 20266 of the 24 activists we track disclosed moves in SEC filings dated October 1–14, 2026, including 1 new 13D campaign. Ranks 1–5 are for Premium Subscribers until November 14, 2026.Top 5 premium
  3. October 1, 2026Filings dated September 15–30, 20265 of 24 tracked activists disclosed moves in SEC filings from September 15–30, 2026; Boaz Weinstein led with $20.1M of disclosed buying; 1 new Schedule 13D campaign.All 10 free
  4. September 15, 2026Filings dated September 1–14, 20261 of 24 tracked activists disclosed moves in SEC filings from September 1–14, 2026; Boaz Weinstein led with $268.3K of disclosed buying.All 10 free
  5. September 1, 2026Filings dated August 15–31, 20266 of 24 tracked activists disclosed moves in SEC filings from August 15–31, 2026; Boaz Weinstein led with $5.6M of disclosed buying.All 10 free