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Adicet Bio, Inc.

ACET
Exchange
Nasdaq
Industry
Pharmaceutical Preparations
SEC CIK
0001720580

No open-market purchases or sales by Adicet Bio, Inc. insiders were filed in the last 90 days; 56 institutions reported holding it in 13F filings for Q2 2026, worth $52.8M in total; no superinvestor holds it.

13F holders, Q3 2025

Institutional positions in Adicet Bio, Inc. as of Sep 30, 2025. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works

Institutional holders
54
+5 vs. Q2 2025
Shares held
51.4M
−201.7K (−0.4%) vs. Q2 2025
Total value
$41.6M
+$10.2M (+32.3%) vs. Q2 2025
New holders
12
13 more added
Sold out
7
11 more reduced

Compare with Q2 2025: new holders, sold out and not filed yet

Holders and value by quarter

Institutions reporting ACET on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.

Institutional holdersQ3 2025: 54 institutions
Q1 2021: 54 institutionsQ2 2021: 66 institutionsQ3 2021: 58 institutionsQ4 2021: 81 institutionsQ1 2022: 88 institutionsQ2 2022: 101 institutionsQ3 2022: 102 institutionsQ4 2022: 100 institutionsQ1 2023: 107 institutionsQ2 2023: 95 institutionsQ3 2023: 84 institutionsQ4 2023: 77 institutionsQ1 2024: 98 institutionsQ2 2024: 86 institutionsQ3 2024: 64 institutionsQ4 2024: 64 institutionsQ1 2025: 56 institutionsQ2 2025: 49 institutionsQ3 2025: 54 institutionsQ4 2025: 49 institutionsQ1 2026: 49 institutionsQ2 2026: 56 institutions
Value heldQ3 2025: $41.6M
Q1 2021: $266.3MQ2 2021: $218.1MQ3 2021: $156.1MQ4 2021: $531.2MQ1 2022: $660.4MQ2 2022: $555.9MQ3 2022: $590.7MQ4 2022: $375.7MQ1 2023: $231.3MQ2 2023: $90.4MQ3 2023: $48.9MQ4 2023: $63.0MQ1 2024: $176.6MQ2 2024: $77.4MQ3 2024: $82.3MQ4 2024: $55.4MQ1 2025: $42.0MQ2 2025: $31.5MQ3 2025: $41.6MQ4 2025: $56.6MQ1 2026: $43.7MQ2 2026: $52.8M
Institutions holding ACET and their total value by quarter
QuarterHoldersValue
Q2 202656$52.8M
Q1 202649$43.7M
Q4 202549$56.6M
Q3 202554$41.6M
Q2 202549$31.5M
Q1 202556$42.0M
Q4 202464$55.4M
Q3 202464$82.3M
Q2 202486$77.4M
Q1 202498$176.6M
Q4 202377$63.0M
Q3 202384$48.9M
Q2 202395$90.4M
Q1 2023107$231.3M
Q4 2022100$375.7M
Q3 2022102$590.7M
Q2 2022101$555.9M
Q1 202288$660.4M
Q4 202181$531.2M
Q3 202158$156.1M
Q2 202166$218.1M
Q1 202154$266.3M

Institutions, Q3 2025

Shares, value and share of portfolio for each institution holding Adicet Bio, Inc.; share changes are against Q2 2025.

Institutions holding ACET in Q3 2025
InstitutionSharesValue% of portfolioChange in sharesAction
Advisor Group Holdings, Inc.10$70.00%+10New
Citigroup Inc166$1340.00%−542−76.6%Reduced
Advisory Services Network, LLC316$2560.00%+316New
JPMorgan Chase & Co771$6250.00%00.0%Unchanged
FMR LLC776$6290.00%−244,002−99.7%Reduced
SBI Securities Co., Ltd.827$6700.00%+5+0.6%Added
BNP Paribas Arbitrage, SA896$7260.00%00.0%Unchanged
Toth Financial Advisory Corp1,600$1.30K0.00%00.0%Unchanged
Hollencrest Capital Management2,000$1.62K0.00%00.0%Unchanged
Tower Research Capital LLC (TRC)4,992$4.04K0.00%−24,067−82.8%Reduced
Raymond James Financial Inc13,265$10.7K0.00%+9,513+253.5%Added
Mariner, LLC14,850$12.0K0.00%+14,850New
HRT Financial LP18,627$15.0K0.00%+18,627New
Qube Research & Technologies Ltd20,257$16.4K0.00%+300+1.5%Added
Bank of America Corp20,607$16.7K0.00%−28−0.1%Reduced
UBS Group AG21,438$17.4K0.00%+2,930+15.8%Added
Two Sigma Securities, LLC25,274$20.5K0.00%+25,274New
Abacus Planning Group, Inc.36,764$29.8K0.00%00.0%Unchanged
Susquehanna International Group, LLP40,370$32.7K0.00%+40,370New
Squarepoint Ops LLC46,427$37.6K0.00%+46,427New
Marshall Wace, LLP51,733$41.9K0.00%+51,733New
Dimensional Fund Advisors LP52,963$42.9K0.00%−4,305−7.5%Reduced
XTX Topco Ltd58,139$47.1K0.00%+34,559+146.6%Added
Bluefin Capital Management, LLC66,854$54.2K0.02%+66,854New
Morgan Stanley73,682$59.7K0.00%+1,456+2.0%Added
Rangeley Capital, LLC75,000$60.8K0.06%+75,000New
Royal Bank of Canada80,110$65.0K0.00%+80,022+90,934.1%Added
Virtu Financial LLC79,916$65.0K0.00%+79,916New
Vontobel Holding Ltd.80,000$65.2K0.00%00.0%Unchanged
Northern Trust Corp140,373$113.7K0.00%00.0%Unchanged
Jane Street Group, LLC186,200$150.9K0.00%+186,200New
State Street Corp244,186$197.8K0.00%−2,735−1.1%Reduced
Barclays PLC300,000$243.1K0.00%+150,000+100.0%Added
Wealthedge Investment Advisors, LLC300,054$243.1K0.09%−13,054−4.2%Reduced
Johnson & Johnson364,472$295.3K0.06%00.0%Unchanged
Schonfeld Strategic Advisors LLC479,108$388.2K0.00%−1,400,987−74.5%Reduced
Millennium Management LLC565,953$458.5K0.00%−26,374−4.5%Reduced
Citadel Advisors LLC583,948$473.1K0.00%+123,542+26.8%Added
BlackRock, Inc.585,377$474.3K0.00%−14,110−2.4%Reduced
RBF Capital, LLC617,319$500.2K0.02%00.0%Unchanged
Alyeska Investment Group, L.P.655,665$531.2K0.00%00.0%Unchanged
Geode Capital Management, LLC706,334$572.4K0.00%00.0%Unchanged
Two Sigma Advisers, LP780,982$632.8K0.00%+214,943+38.0%Added
Two Sigma Investments, LP854,568$692.4K0.00%+341,761+66.6%Added
Bridgeway Capital Management, LLC901,600$730.5K0.02%00.0%Unchanged
Regeneron Pharmaceuticals, Inc.968,183$784.4K0.11%00.0%Unchanged
Renaissance Technologies LLC1,828,949$1.48M0.00%+675,133+58.5%Added
Acadian Asset Management LLC2,265,491$1.83M0.00%+190,887+9.2%Added
Carlyle Group Inc.2,948,718$2.39M0.06%00.0%Unchanged
Vanguard Group Inc3,272,522$2.65M0.00%00.0%Unchanged
Goldman Sachs Group Inc3,751,617$3.04M0.00%−4810.0%Reduced
Ra Capital Management, L.P.7,541,000$6.11M0.08%00.0%Unchanged
Tang Capital Management LLC8,223,612$6.66M0.26%00.0%Unchanged
OrbiMed Advisors LLC11,447,140$9.27M0.22%00.0%Unchanged
DAFNA Capital Management LLC0$00.00%−540,000−100.0%Sold out
Luminus Management LLC0$00.00%−289,935−100.0%Sold out
Charles Schwab Investment Management Inc0$00.00%−30,000−100.0%Sold out
D. E. Shaw & Co., Inc.0$00.00%−22,199−100.0%Sold out
Landscape Capital Management, L.L.C.0$00.00%−17,846−100.0%Sold out
Riggs Asset Managment Co. Inc.0$00.00%−1,122−100.0%Sold out
Simplex Trading, LLC0$00.00%−583−100.0%Sold out