ADICET BIO INC (ACET)
Institutional ownership reported to the SEC as of Q2 2026, across 24 quarters.
Institutions report 6,824,334 shares against 9,361,490 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | $8.1M | 932,624 | 0.07% | 3q | -21.1%-$2.2M |
| CITADEL ADVISORS LLC | $8.1M | 865,476 | 0.00% | 3q | +126.7%+$4.5M |
| ORBIMED ADVISORS LLC | $7.3M | 844,787 | 0.14% | 3q | -17.8%-$1.6M |
| FRANKLIN RESOURCES INC | $5.4M | 626,571 | 0.00% | 3q | HELD |
| Stonepine Capital Management, LLC | $4.2M | 491,036 | 1.09% | 3q | +121.2%+$2.3M |
| VANGUARD CAPITAL MANAGEMENT LLC | $3.0M | 343,228 | 0.00% | 2q | +2.0%+$57.9K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $2.4M | 274,375 | 0.00% | 3q | HELD |
| RENAISSANCE TECHNOLOGIES LLC | $2.3M | 265,945 | 0.00% | 3q | +14.3%+$288.2K |
| Alyeska Investment Group, L.P. | $1.8M | 203,799 | 0.00% | 3q | HELD |
| Schonfeld Strategic Advisors LLC | $1.7M | 195,514 | 0.01% | new | NEW |
| Carlyle Group Inc. | $1.6M | 184,295 | 0.02% | 3q | HELD |
| NEXTBio Capital Management LP | $1.4M | 157,827 | 0.63% | 3q | HELD |
| ACADIAN ASSET MANAGEMENT LLC | $1.1M | 124,832 | 0.00% | 3q | +5.7%+$57.7K |
| TWO SIGMA INVESTMENTS, LP | $836.7K | 96,839 | 0.00% | 3q | +124.7%+$464.3K |
| GEODE CAPITAL MANAGEMENT, LLC | $826.7K | 95,634 | 0.00% | 3q | -5.4%-$47.6K |
| DAFNA Capital Management LLC | $810.5K | 93,812 | 0.15% | 3q | HELD |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | $742.7K | 85,959 | 0.01% | new | NEW |
| MARSHALL WACE, LLP | $686.8K | 79,488 | 0.00% | new | NEW |
| Trexquant Investment LP | $673.9K | 78,002 | 0.00% | 2q | +78.6%+$296.7K |
| STATE STREET CORP | $625.9K | 72,444 | 0.00% | 3q | +100.0%+$313.0K |
| JANE STREET GROUP, LLC | $609.6K | 70,561 | 0.00% | 2q | +90.3%+$289.2K |
| Burkehill Global Management, LP | $540.0K | 62,500 | 0.02% | 3q | HELD |
| BlackRock, Inc. | $536.8K | 62,126 | 0.00% | 3q | +69.8%+$220.7K |
| REGENERON PHARMACEUTICALS, INC. | $522.8K | 60,511 | 0.30% | new | NEW |
| Rangeley Capital, LLC | $439.7K | 50,892 | 0.40% | 3q | -9.1%-$44.1K |
| VANGUARD FIDUCIARY TRUST CO | $437.8K | 50,670 | 0.00% | 2q | +0.7%+$2.9K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $347.8K | 20,650 | 0.00% | 2q | HELD |
| RBF Capital, LLC | $333.3K | 38,582 | 0.01% | 3q | HELD |
| Quadrature Capital Ltd | $312.7K | 36,193 | 0.00% | new | NEW |
| DIMENSIONAL FUND ADVISORS LP | $273.0K | 31,603 | 0.00% | 2q | +193.2%+$179.9K |
| UBS Group AG | $257.6K | 29,817 | 0.00% | 3q | -22.3%-$73.9K |
| Verdad Advisers, LP | $217.7K | 25,200 | 0.21% | new | NEW |
| XTX Topco Ltd | $209.8K | 24,284 | 0.00% | 3q | +27.0%+$44.6K |
| JOHNSON & JOHNSON | $196.8K | 22,779 | 0.02% | 3q | HELD |
| PRELUDE CAPITAL MANAGEMENT, LLC | $160.3K | 18,550 | 0.01% | new | NEW |
| NORTHERN TRUST CORP | $159.3K | 18,436 | 0.00% | 3q | -4.0%-$6.6K |
| OCCUDO QUANTITATIVE STRATEGIES LP | $143.7K | 16,636 | 0.01% | 2q | +10.2%+$13.3K |
| Squarepoint Ops LLC | $131.8K | 15,254 | 0.00% | new | NEW |
| SIMPLEX TRADING, LLC | $125.8K | 4,814 | 0.00% | 3q | +245.6%+$89.4K |
| Vontobel Holding Ltd. | $119.0K | 13,776 | 0.00% | 2q | -3.3%-$4.1K |
| AXQ CAPITAL, LP | $95.0K | 10,991 | 0.01% | new | NEW |
| Jump Financial, LLC | $94.5K | 10,942 | 0.00% | new | NEW |
| Arax Advisory Partners | $51.8K | 6,000 | 0.00% | new | NEW |
| Vanguard Global Advisers, LLC | $45.1K | 5,221 | 0.00% | 2q | HELD |
| MORGAN STANLEY | $19.8K | 2,291 | 0.00% | 3q | -34.4%-$10.4K |
| ROYAL BANK OF CANADA | $15.0K | 1,701 | 0.00% | 3q | +0.8% |
| GROUP ONE TRADING LLC | $2.6K | options only | 0.00% | 2q | OPTIONS |
| Tower Research Capital LLC (TRC) | $2.4K | 277 | 0.00% | 3q | -80.5%-$9.9K |
| Avion Wealth | $2.0K | 246 | 0.00% | 2q | HELD |
| JPMORGAN CHASE & CO | $1.7K | 196 | 0.00% | 3q | +2350.0%+$1.6K |
| BNP PARIBAS FINANCIAL MARKETS | $432 | 50 | 0.00% | 3q | HELD |
| Caitong International Asset Management Co., Ltd | $406 | 47 | 0.00% | 2q | +1466.7% |
| SBI Securities Co., Ltd. | $207 | 24 | 0.00% | 3q | +26.3% |
| NATIONAL BANK OF CANADA /FI/ | $146 | 17 | 0.00% | 2q | HELD |
| FMR LLC | $52 | 6 | 0.00% | new | NEW |
| TD Waterhouse Canada Inc. | $26 | 3 | 0.00% | new | NEW |
| DANSKE BANK A/S | $9 | 1 | 0.00% | 3q | HELD |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G/A | RA Capital Management, L.P.with 3 co-filers | 9.9% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 57 | $59.8M | 6,824,334 | 13 | 19 | 9 | 1.4% |
| Q1 2026 | 50 | $44.0M | 6,406,555 | 10 | 12 | 9 | 0.9% |
| Q4 2025 | 49 | $56.9M | 6,759,804 | 49 | 0 | 1 | 0.0% |
| Q3 2025 | 55 | $41.6M | 51,402,662 | 13 | 13 | 9 | 0.0% |
| Q2 2025 | 48 | $31.5M | 51,603,072 | 9 | 10 | 14 | 0.1% |
| Q1 2025 | 56 | $42.1M | 55,856,035 | 6 | 11 | 22 | 0.1% |
| Q4 2024 | 62 | $55.5M | 57,616,222 | 3 | 15 | 20 | 0.1% |
| Q3 2024 | 63 | $82.4M | 57,206,661 | 8 | 16 | 19 | 0.0% |
| Q2 2024 | 87 | $77.5M | 63,964,116 | 18 | 27 | 25 | 0.1% |
| Q1 2024 | 99 | $196.0M | 83,341,394 | 31 | 40 | 13 | 0.1% |
| Q4 2023 | 77 | $68.5M | 36,186,050 | 6 | 30 | 22 | 0.1% |
| Q3 2023 | 83 | $48.9M | 35,675,799 | 14 | 29 | 21 | 0.2% |
| Q2 2023 | 95 | $90.5M | 37,154,641 | 18 | 25 | 29 | 0.2% |
| Q1 2023 | 106 | $232.6M | 40,251,699 | 26 | 23 | 30 | 0.6% |
| Q4 2022 | 100 | $377.4M | 42,035,453 | 21 | 30 | 29 | 0.4% |
| Q3 2022 | 100 | $597.2M | 41,547,851 | 23 | 40 | 18 | 1.1% |
| Q2 2022 | 100 | $559.2M | 37,987,545 | 31 | 32 | 14 | 0.6% |
| Q1 2022 | 86 | $664.2M | 33,094,712 | 15 | 31 | 23 | 0.6% |
| Q4 2021 | 78 | $540.4M | 30,426,920 | 30 | 31 | 7 | 1.6% |
| Q3 2021 | 54 | $156.1M | 19,920,135 | 4 | 22 | 13 | 0.0% |
| Q2 2021 | 64 | $218.1M | 21,228,146 | 21 | 18 | 15 | 0.0% |
| Q1 2021 | 52 | $266.3M | 20,393,566 | 17 | 20 | 7 | 0.0% |
| Q4 2020 | 41 | $134.3M | 9,561,607 | 13 | 11 | 8 | 0.0% |
| Q3 2020 | 30 | $107.7M | 9,051,079 | 30 | 0 | 0 | 0.0% |