Latest Period
Q2 2026
Security Snapshot
Adicet Bio, Inc. - Common Stock, par value $0.0001 per share (ACET) Institutional Ownership
CUSIP: 007002207
13F Institutional Holders and Ownership History from Q4 2025 to Q2 2026
Institutions Reporting
56
Shares (Excl. Options)
6,109,842
Price
$8.64
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- ACET on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 6,109,842
- Total 13F value
- $52,787,192
- Portfolio coverage rank
- 0%
- Share change
- -240,056
- Value change
- -$885,342
- Number of holders
- 56
- Shares outstanding
- 9,449,354
- SEC-reported price per share
- $8.22
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ACET - Adicet Bio, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 007002207.
- 56 institutions reported positions in Q2 2026.
- 4 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 48 to 56 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $43,249,809 to $52,787,192.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 56 institutions filings for Q2 2026.
Security key
007002207
Latest holder period
Q2 2026
13F holders
56
13D/G owners
4
CIK / CUSIP context first
Open Q2 2026 holders
ACET full holder history
Adicet Bio, Inc. SEC filings
Adicet Bio, Inc. company facts
Adicet Bio, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 007002207:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
4
Security
ACET
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 9.9% | -20% | $8,082,599 | -$2,135,272 | 935,486 | -21% | RA Capital Management, L.P. | 30 Jun 2026 |
| FRANKLIN RESOURCES INC | 6.5% | $5,238,572 | 626,571 | Franklin Resources, Inc. | 31 Dec 2025 | |||
| Woodline Partners LP | 3.3% | -46% | $2,132,374 | -$2,123,876 | 313,124 | -50% | Woodline Partners LP | 31 Mar 2026 |
| TANG CAPITAL MANAGEMENT LLC | 0.1% | $51,050 | 6,158 | TANG CAPITAL MANAGEMENT, LLC | 31 Dec 2025 |
As of 30 Jun 2026, 56 institutional investors reported holding 6,109,842 shares of Adicet Bio, Inc. - Common Stock, par value $0.0001 per share (ACET). This represents 65% of the company’s total 9,449,354 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
61%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 9.9% | 932,624 | -21% | 0.07% | $8,057,871 |
| ORBIMED ADVISORS LLC | 8.9% | 844,787 | -18% | 0.14% | $7,298,960 |
| FRANKLIN RESOURCES INC | 6.6% | 626,571 | 0% | 0% | $5,413,573 |
| CITADEL ADVISORS LLC | 4.6% | 432,738 | +13% | 0% | $3,738,856 |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.6% | 343,228 | +2% | 0% | $2,965,490 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2.9% | 274,375 | 0% | 0% | $2,370,600 |
| RENAISSANCE TECHNOLOGIES LLC | 2.8% | 265,945 | +14% | 0% | $2,297,765 |
| Stonepine Capital Management, LLC | 2.6% | 245,518 | +11% | 1.6% | $2,121,276 |
| Alyeska Investment Group, L.P. | 2.2% | 203,799 | 0% | 0% | $1,760,823 |
| Schonfeld Strategic Advisors LLC | 2.1% | 195,514 | 0.01% | $1,689,238 | |
| Carlyle Group Inc. | 2% | 184,295 | 0% | 0.02% | $1,592,308 |
| NEXTBio Capital Management LP | 1.7% | 157,827 | 0% | 0.63% | $1,363,625 |
| ACADIAN ASSET MANAGEMENT LLC | 1.3% | 124,832 | +5.7% | 0% | $1,076,000 |
| TWO SIGMA INVESTMENTS, LP | 1% | 96,839 | +125% | 0% | $836,689 |
| GEODE CAPITAL MANAGEMENT, LLC | 1% | 95,634 | -5.4% | 0% | $826,703 |
| DAFNA Capital Management LLC | 0.99% | 93,812 | 0% | 0.15% | $810,536 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 0.91% | 85,959 | 0.01% | $742,686 | |
| MARSHALL WACE, LLP | 0.84% | 79,488 | 0% | $686,775 | |
| Trexquant Investment LP | 0.83% | 78,002 | +79% | 0% | $673,937 |
| JANE STREET GROUP, LLC | 0.75% | 70,561 | +90% | 0% | $609,647 |
| Burkehill Global Management, LP | 0.66% | 62,500 | 0% | 0.02% | $540,000 |
| BlackRock, Inc. | 0.66% | 62,126 | +70% | 0% | $536,769 |
| REGENERON PHARMACEUTICALS, INC. | 0.64% | 60,511 | 0.3% | $522,819 | |
| Rangeley Capital, LLC | 0.54% | 50,892 | -9.1% | 0.43% | $439,707 |
| VANGUARD FIDUCIARY TRUST CO | 0.54% | 50,670 | +0.67% | 0% | $437,789 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
3
Latest
Q2 2026
Rows shown
1-3 of 3