ADICET BIO INC (ACET) Institutional Ownership Changes & 13F Activity
ADICET BIO INC (ACET). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Orbimed Advisors Llc, Ra Capital Management, L.P., Woodline Partners Lp, Adage Capital Partners Gp, L.L.C., and Prosight Management, Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Bluefin Capital Management, Llc | Sell | -66,854 | -100.0% | 0 | $0.00 | Q4 2025 | Apr 29, 2026 |
| Orbimed Advisors Llc | Buy | +1,027,944 | — | 1,027,944 | $8.66M | Q4 2025 | Feb 17, 2026 |
| Ra Capital Management, L.P. | Buy | +948,249 | — | 948,249 | $7.98M | Q4 2025 | Feb 17, 2026 |
| Woodline Partners Lp | Buy | +625,000 | — | 625,000 | $5.26M | Q4 2025 | Feb 17, 2026 |
| Adage Capital Partners Gp, L.L.C. | Buy | +274,375 | — | 274,375 | $2.31M | Q4 2025 | Feb 17, 2026 |
| Two Sigma Investments, Lp | Buy | +144,796 | — | 144,796 | $1.22M | Q4 2025 | Feb 17, 2026 |
| Adar1 Capital Management, Llc | Buy | +128,646 | — | 128,646 | $1.08M | Q4 2025 | Feb 17, 2026 |
| Two Sigma Advisers, Lp | Buy | +111,336 | — | 111,336 | $937.45K | Q4 2025 | Feb 17, 2026 |
| Citadel Advisors Llc | Buy | +107,814 | — | 107,814 | $907.79K | Q4 2025 | Feb 17, 2026 |
| Dafna Capital Management Llc | Buy | +93,812 | — | 93,812 | $789.90K | Q4 2025 | Feb 17, 2026 |
| Burkehill Global Management, Lp | Buy | +62,500 | — | 62,500 | $526.25K | Q4 2025 | Feb 17, 2026 |
| Luminus Management Llc | Buy | +59,558 | — | 59,558 | $501.48K | Q4 2025 | Feb 17, 2026 |
| Bridgeway Capital Management, Llc | Buy | +56,350 | — | 56,350 | $474.47K | Q4 2025 | Feb 17, 2026 |
| Rbf Capital, Llc | Buy | +38,582 | — | 38,582 | $324.86K | Q4 2025 | Feb 17, 2026 |
| Rangeley Capital, Llc | Buy | +25,001 | — | 25,001 | $210.51K | Q4 2025 | Feb 17, 2026 |
| Xtx Topco Ltd | Buy | +18,610 | — | 18,610 | $156.70K | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +14,067 | — | 14,067 | $118.44K | Q4 2025 | Feb 17, 2026 |
| Tang Capital Management Llc | Buy | +6,158 | — | 6,158 | $51.85K | Q4 2025 | Feb 17, 2026 |
| Royal Bank Of Canada | Buy | +5,449 | — | 5,449 | $46.00K | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +1,288 | — | 1,288 | $10.85K | Q4 2025 | Feb 17, 2026 |
| Tower Research Capital Llc (Trc) | Buy | +1,072 | — | 1,072 | $9.03K | Q4 2025 | Feb 17, 2026 |
| Fmr Llc | Buy | +34 | — | 34 | $286.00 | Q4 2025 | Feb 17, 2026 |
| Prosight Management, Lp | Buy | +250,244 | — | 250,244 | $2.11M | Q4 2025 | Feb 13, 2026 |
| Stonepine Capital Management, Llc | Buy | +220,011 | — | 220,011 | $1.85M | Q4 2025 | Feb 13, 2026 |
| Alyeska Investment Group, L.P. | Buy | +203,799 | — | 203,799 | $1.72M | Q4 2025 | Feb 13, 2026 |
| Carlyle Group Inc. | Buy | +184,295 | — | 184,295 | $1.54M | Q4 2025 | Feb 13, 2026 |
| Nextbio Capital Management Lp | Buy | +157,827 | — | 157,827 | $1.33M | Q4 2025 | Feb 13, 2026 |
| Squarepoint Ops Llc | Buy | +55,723 | — | 55,723 | $469.19K | Q4 2025 | Feb 13, 2026 |
| Maven Securities Ltd | Buy | +31,250 | — | 31,250 | $263.13K | Q4 2025 | Feb 13, 2026 |
| State Street Corp | Buy | +25,896 | — | 25,896 | $218.04K | Q4 2025 | Feb 13, 2026 |
Frequently asked questions about ACET activity
Which institutional owners are buying ACET?
Institutional owners buying ACET include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ACET activity?
"Buy" means an investor increased their reported position in ACET compared to the prior reporting period. This reflects growing exposure to ADICET BIO INC (ACET) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ACET increasing?
Institutional interest in ACET can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
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