ACET
Adicet Bio, Inc.
$9.00
+0.38 (+4.41%)
At close · Jul 2
Market Cap
$84.13M
Shares
9,348,236
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 49
Total Value: $43,603,113
Total Shares: 6,402,810
Institutional Ownership Trend
2 quarters
Holder Concentration
Across 49 13F filers · Δ vs Dec 31, 2025Top Holder
18.5%
+3.0 pts
Top 5
55.5%
+2.7 pts
Top 10
75.7%
+4.5 pts
HHI
880
Broadly held+124
Quarterly Activity
vs Dec 31, 2025
New
13
Increased
12
Decreased
8
Sold Out
12
Unchanged
16
Holder count:
+1
Institutional value:
-22.3%
Shares held:
-3.9%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | +274,009 | 381,823 | |
| Mid RA CAPITAL MANAGEMENT, L.P. | +234,375 | 1,182,624 | |
| Mega UBS Group AG | +34,571 | 38,368 | |
| Small Rangeley Capital, LLC | +30,999 | 56,000 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | +12,279 | 101,135 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Large Woodline Partners LP | −311,876 | 313,124 | |
| Mega TWO SIGMA INVESTMENTS, LP | −101,690 | 43,106 | |
| Mid ADAR1 Capital Management, LLC | −74,819 | 53,827 | |
| Large ACADIAN ASSET MANAGEMENT LLC | −63,257 | 118,138 | |
| Large RENAISSANCE TECHNOLOGIES LLC | −10,354 | 232,591 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 336,524 | $2,291,728 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | 52,900 | $360,249 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 50,334 | $342,774 | |
| Large Trexquant Investment LP | 43,666 | $297,365 | |
| Mega JANE STREET GROUP, LLC | 37,084 | $252,541 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 291,277 | $2,452,551 | |
| Mega GOLDMAN SACHS GROUP INC | 234,510 | $1,974,574 | |
| Large TWO SIGMA ADVISERS, LP | 111,336 | $937,449 | |
| Small LUMINUS MANAGEMENT LLC | 59,558 | $501,478 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | 56,350 | $474,467 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid RA CAPITAL MANAGEMENT, L.P. | $8,053,669 | 18.47% | 1,182,624 | Shares | Sole | 2026-05-15 | ||||
| Mid ORBIMED ADVISORS LLC | $7,000,298 | 16.05% | 1,027,944 | Shares | Sole | 2026-05-15 | ||||
| Mega FRANKLIN RESOURCES INC | $4,266,948 | 9.79% | 626,571 | Shares | Defined | 2026-05-13 | ||||
| Mega CITADEL ADVISORS LLC | $2,600,214 | 5.96% | 381,823 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $2,291,728 | 5.26% | 336,524 | Shares | Defined | 2026-05-15 | ||||
| Large Woodline Partners LP | $2,132,374 | 4.89% | 313,124 | Shares | Sole | 2026-05-15 | ||||
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. | $1,868,493 | 4.29% | 274,375 | Shares | Sole | 2026-05-15 | ||||
| Small Prosight Management, LP | $1,704,161 | 3.91% | 250,244 | Shares | Sole | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $1,583,944 | 3.63% | 232,591 | Shares | Sole | 2026-05-14 | ||||
| Small Stonepine Capital Management, LLC | $1,511,513 | 3.47% | 221,955 | Shares | Sole | 2026-05-14 | ||||
| Large Alyeska Investment Group, L.P. | $1,387,871 | 3.18% | 203,799 | Shares | Sole | 2026-05-15 | ||||
| Large Carlyle Group Inc. | $1,255,048 | 2.88% | 184,295 | Shares | Defined | 2026-05-08 | ||||
| Small NEXTBio Capital Management LP | $1,074,801 | 2.46% | 157,827 | Shares | Sole | 2026-05-14 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $804,519 | 1.85% | 118,138 | Shares | Defined | 2026-05-13 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $688,729 | 1.58% | 101,135 | Shares | Defined | 2026-05-15 | ||||
| Small DAFNA Capital Management LLC | $638,859 | 1.47% | 93,812 | Shares | Sole | 2026-05-15 | ||||
| Mid Burkehill Global Management, LP | $425,625 | 0.98% | 62,500 | Shares | Sole | 2026-05-15 | ||||
| Small Rangeley Capital, LLC | $381,360 | 0.87% | 56,000 | Shares | Sole | 2026-05-15 | ||||
| Mid ADAR1 Capital Management, LLC | $366,561 | 0.84% | 53,827 | Shares | Sole | 2026-05-18 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $360,249 | 0.83% | 52,900 | Call | Other | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $342,774 | 0.79% | 50,334 | Shares | Defined | 2026-05-08 | ||||
| Large Trexquant Investment LP | $297,365 | 0.68% | 43,666 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $293,551 | 0.67% | 43,106 | Shares | Sole | 2026-05-15 | ||||
| Mid RBF Capital, LLC | $262,743 | 0.60% | 38,582 | Shares | Sole | 2026-05-18 | ||||
| Mega UBS Group AG | $261,286 | 0.60% | 38,368 | Shares | Defined | 2026-05-05 | ||||
| Mega JANE STREET GROUP, LLC | $252,541 | 0.58% | 37,084 | Shares | Defined | 2026-05-12 | ||||
| Mega BlackRock, Inc. | $249,143 | 0.57% | 36,585 | Shares | Sole | 2026-05-13 | ||||
| Mega STATE STREET CORP | $246,671 | 0.57% | 36,222 | Shares | Defined | 2026-05-15 | ||||
| Mega BARCLAYS PLC | $170,250 | 0.39% | 25,000 | Shares | Defined | 2026-05-15 | ||||
| Small JOHNSON & JOHNSON | $155,124 | 0.36% | 22,779 | Shares | Defined | 2026-05-13 | ||||
| Mega NORTHERN TRUST CORP Bank | $130,752 | 0.30% | 19,200 | Shares | Defined | 2026-05-14 | ||||
| Mid XTX Topco Ltd | $130,248 | 0.30% | 19,126 | Shares | Defined | 2026-05-15 | ||||
| Mid OCCUDO QUANTITATIVE STRATEGIES LP | $102,831 | 0.24% | 15,100 | Shares | Sole | 2026-05-15 | ||||
| Large Vontobel Holding Ltd. | $97,022 | 0.22% | 14,247 | Shares | Defined | 2026-05-08 | ||||
| Mega DIMENSIONAL FUND ADVISORS LP | $73,398 | 0.17% | 10,778 | Shares | Sole | 2026-05-07 | ||||
| Mega Vanguard Global Advisers, LLC | $35,555 | 0.08% | 5,221 | Shares | Defined | 2026-05-08 | ||||
| Large NewEdge Advisors, LLC | $26,245 | 0.06% | 3,854 | Shares | Sole | 2026-06-03 | ||||
| Mega MORGAN STANLEY | $23,787 | 0.05% | 3,493 | Shares | Defined | 2026-05-15 | ||||
| Small FNY Investment Advisers, LLC | $21,792 | 0.05% | 3,200 | Shares | Sole | 2026-04-15 | ||||
| Mega ROYAL BANK OF CANADA Bank | $11,569 | 0.03% | 1,699 | Shares | Defined | 2026-05-15 | ||||
| Mid Tower Research Capital LLC (TRC) | $9,677 | 0.02% | 1,421 | Shares | Defined | 2026-05-15 | ||||
| Mid SIMPLEX TRADING, LLC | $9,486 | 0.02% | 1,393 | Shares | Sole | 2026-05-14 | ||||
| Micro Avion Wealth | $1,675 | 0.00% | 246 | Shares | Sole | 2026-05-01 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $340 | 0.00% | 50 | Shares | Defined | 2026-05-12 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $129 | 0.00% | 19 | Shares | Defined | 2026-04-28 | ||||
| Large NATIONAL BANK OF CANADA /FI/ Bank | $115 | 0.00% | 17 | Shares | Defined | 2026-05-15 | ||||
| Mega JPMORGAN CHASE & CO | $54 | 0.00% | 8 | Shares | Defined | 2026-05-13 | ||||
| Small Caitong International Asset Management Co., Ltd | $20 | 0.00% | 3 | Shares | Sole | 2026-05-11 | ||||
| Large DANSKE BANK A/S Bank | $6 | 0.00% | 1 | Shares | Sole | 2026-05-12 | ||||
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