ADICET BIO INC (ACET)
Institutional ownership reported to the SEC as of Q2 2026, across 24 quarters.
55
Reporting holders
$54.4M
Reported value
66.6%
Of shares outstanding
1.0%
Held as options
+8
Holder change
Institutions report 6,230,296 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.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | $8.1M | 932,624 | 0.07% | 3q | -21.1%-$2.2M |
| 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 |
| CITADEL ADVISORS LLC | $4.0M | 432,738 | 0.00% | 3q | +13.3%+$474.0K |
| 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 |
| 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 |
| 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 |
| STATE STREET CORP | $313.0K | 36,222 | 0.00% | 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 |
| JPMORGAN CHASE & CO | $1.7K | 196 | 0.00% | 3q | +2350.0%+$1.6K |
| ACADIAN ASSET MANAGEMENT LLC | $1.1K | 124,832 | 0.00% | 3q | +5.7% |
| 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 |
| Avion Wealth | $2 | 246 | 0.00% | 2q | 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 | 55 | $54.4M | 6,230,296 | 13 | 17 | 9 | 1.0% |
| Q1 2026 | 47 | $43.2M | 6,284,971 | 9 | 12 | 7 | 0.9% |
| Q4 2025 | 46 | $55.2M | 6,554,546 | 46 | 0 | 1 | 0.0% |
| Q3 2025 | 52 | $39.7M | 49,038,628 | 11 | 12 | 9 | 0.0% |
| Q2 2025 | 47 | $30.2M | 49,528,468 | 9 | 9 | 14 | 0.1% |
| Q1 2025 | 54 | $40.5M | 53,791,129 | 6 | 10 | 20 | 0.1% |
| Q4 2024 | 58 | $53.5M | 55,551,327 | 2 | 13 | 19 | 0.1% |
| Q3 2024 | 60 | $79.6M | 55,281,097 | 7 | 14 | 19 | 0.0% |
| Q2 2024 | 82 | $76.1M | 62,784,158 | 15 | 26 | 24 | 0.1% |
| Q1 2024 | 92 | $192.6M | 81,879,437 | 29 | 37 | 11 | 0.1% |
| Q4 2023 | 71 | $65.8M | 34,801,075 | 6 | 26 | 19 | 0.1% |
| Q3 2023 | 77 | $47.0M | 34,299,403 | 13 | 24 | 21 | 0.1% |
| Q2 2023 | 89 | $89.6M | 36,793,593 | 16 | 24 | 27 | 0.1% |
| Q1 2023 | 94 | $227.2M | 39,646,383 | 23 | 17 | 27 | 0.2% |
| Q4 2022 | 81 | $349.3M | 39,101,510 | 17 | 26 | 20 | 0.1% |
| 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% |