Who owns Adicet Bio, Inc.?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of ACET from SEC Form 13F filings across 56 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 56 institutions disclosed 6.1M shares of Adicet Bio, Inc. worth $52.8M — about 56.9% of shares outstanding; the largest disclosed holder is RA CAPITAL MANAGEMENT, L.P.. Source: SEC Form 13F filings, parsed by EvidInvest.
56
13F holders
$52.8M
value, 2026 filers
56.9%
of shares outstanding (6.1M sh)
14
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of ACET's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | 932,624 | $8.1M | 0.1% | 8.7% | -21.1% |
| 2 | ORBIMED ADVISORS LLC | 844,787 | $7.3M | 0.1% | 7.9% | -17.8% |
| 3 | FRANKLIN RESOURCES INC | 626,571 | $5.4M | 0.0% | 5.8% | 0.0% |
| 4 | CITADEL ADVISORS LLC | 432,738 | $3.7M | 0.0% | 4% | +13.3% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 343,228 | $3.0M | 0.0% | 3.2% | +2.0% |
| 6 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 274,375 | $2.4M | 0.0% | 2.6% | 0.0% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 265,945 | $2.3M | 0.0% | 2.5% | +14.3% |
| 8 | Stonepine Capital Management, LLC | 245,518 | $2.1M | 1.2% | 2.3% | +10.6% |
| 9 | Alyeska Investment Group, L.P. | 203,799 | $1.8M | 0.0% | 1.9% | 0.0% |
| 10 | Schonfeld Strategic Advisors LLCNEW | 195,514 | $1.7M | 0.0% | 1.8% | new |
| 11 | Carlyle Group Inc. | 184,295 | $1.6M | 0.0% | 1.7% | 0.0% |
| 12 | NEXTBio Capital Management LP | 157,827 | $1.4M | 0.6% | 1.5% | 0.0% |
| 13 | ACADIAN ASSET MANAGEMENT LLC | 124,832 | $1.1M | 0.0% | 1.2% | +5.7% |
| 14 | TWO SIGMA INVESTMENTS, LP | 96,839 | $836,689 | 0.0% | 0.9% | +124.7% |
| 15 | GEODE CAPITAL MANAGEMENT, LLC | 95,634 | $826,703 | 0.0% | 0.9% | -5.4% |
| 16 | DAFNA Capital Management LLC | 93,812 | $810,536 | 0.2% | 0.9% | 0.0% |
| 17 | BRIDGEWAY CAPITAL MANAGEMENT, LLCNEW | 85,959 | $742,686 | 0.0% | 0.8% | new |
| 18 | MARSHALL WACE, LLPNEW | 79,488 | $686,775 | 0.0% | 0.7% | new |
| 19 | Trexquant Investment LP | 78,002 | $673,937 | 0.0% | 0.7% | +78.6% |
| 20 | JANE STREET GROUP, LLC | 70,561 | $609,647 | 0.0% | 0.7% | +90.3% |
| 21 | Burkehill Global Management, LP | 62,500 | $540,000 | 0.0% | 0.6% | 0.0% |
| 22 | BlackRock, Inc. | 62,126 | $536,769 | 0.0% | 0.6% | +69.8% |
| 23 | REGENERON PHARMACEUTICALS, INC.NEW | 60,511 | $522,819 | 0.3% | 0.6% | new |
| 24 | Rangeley Capital, LLC | 50,892 | $439,707 | 0.4% | 0.5% | -9.1% |
| 25 | VANGUARD FIDUCIARY TRUST CO | 50,670 | $437,789 | 0.0% | 0.5% | +0.7% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.