Profiles
The activist investors we track
The funds known for buying meaningful stakes and pushing for change: board seats, buybacks, spin-offs or a sale. Each profile shows the latest public rank, the most recent 13F portfolio and recent filings. Updated Nov 9, 2026.
- Boaz WeinsteinSaba Capital Management13F $3.9B (Q2 2026) · 98 recent 13D / Form 4#1Oct 1
- Lauren Taylor WolfeImpactive Capital13F $1.4B (Q2 2026) · 3 recent 13D / Form 4#2Sep 1
- Paul SingerElliott Investment Management13F $22.7B (Q2 2026) · 1 recent 13D / Form 4#2Oct 1
- Carl IcahnIcahn Enterprises13F $8.26B (Q2 2026) · 3 recent 13D / Form 4#3Oct 1
- Chris KiperLegion Partners13F $40.6M (Q2 2026) · 5 recent 13D / Form 4#4Oct 1
- Arnaud AjdlerEngine Capital13F $1.03B (Q2 2026) · 1 recent 13D / Form 4#5Sep 1
- Christer GardellCevian Capital13F $3.7B (Q2 2026) · 2 recent 13D / Form 4#5Oct 1
- Larry RobbinsGlenview Capital Management13F $5.49B (Q2 2026) · 1 recent 13D / Form 4#5Sep 15
- Bill AckmanPershing Square Capital Management13F $19.5B (Q2 2026) · 1 recent 13D / Form 4#6Oct 1
- James PappasJCP Investment Management13F $187M (Q2 2026) · 1 recent 13D / Form 4#6Nov 1
- Jeff SmithStarboard Value13F $4.52B (Q2 2026) · 1 recent 13D / Form 4#6Oct 15
- Daniel LoebThird Point13F $4.68B (Q2 2026) · 0 recent 13D / Form 4#7Oct 1
- Nelson PeltzTrian Fund Management13F $4.23B (Q2 2026) · 0 recent 13D / Form 4#7Nov 1
- Keith MeisterCorvex Management13F $3.27B (Q2 2026) · 0 recent 13D / Form 4#8Sep 15
- Scott FergusonSachem Head Capital Management13F $4.82B (Q2 2026) · 2 recent 13D / Form 4#8Oct 1
- Dan GropperCarronade Capital Management13F $5.77B (Q2 2026) · 1 recent 13D / Form 4#9Oct 1
- David EinhornGreenlight Capital13F $3.91B (Q2 2026) · 2 recent 13D / Form 4#9Sep 15
- Mason MorfitValueAct Capital13F $5.63B (Q2 2026) · 0 recent 13D / Form 4#10Sep 15
- Adam KatzIrenic Capital Management13F $2.08B (Q2 2026) · 0 recent 13D / Form 4—Rank
- Barry RosensteinJANA Partners13F $1.9B (Q2 2026) · 0 recent 13D / Form 4—Rank
- Frederick DiSantoAncora13F $5.19B (Q2 2026) · 0 recent 13D / Form 4—Rank
- Jeff Ubben(inactive)Inclusive Capital Partners13F $0 (Q3 2025) · 0 recent 13D / Form 4—Rank
- Jonathan LittLand & Buildings13F $583M (Q2 2026) · 0 recent 13D / Form 4—Rank
- Mick McGuire(inactive)Marcato Capital ManagementNo 13F on file · 0 recent 13D / Form 4—Rank
- Paul HilalMantle Ridge13F $0 (Q2 2026) · 0 recent 13D / Form 4—Rank
- Quentin KoffeyPolitan Capital Management13F $255M (Q2 2026) · 0 recent 13D / Form 4—Rank
“Latest public rank” is the most recent rank visible to free readers. Recent filings run through Sep 30, 2026 for every investor, and 13F values come from the latest 13F filed by then; newer filings appear as each edition unlocks.