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Disclosery

ACET ADICET BIO INC

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COM NEW (common), issuer CIK 1720580

47 managers (48 13F filers) reported a position in ACET shares at 2025-12-31, 6,660,723 shares in all. 47 filers opened a position and 0 filers sold out during the quarter.

Managers
47
13F filers
48
New
47
Added
0
Reduced
0
Sold out
0
Shares held by filers
6,660,723

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q4 2025

Filers in the available 13F reports with a share position at 2025-12-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
ORBIMED ADVISORS LLCin group ORBIMED ADVISORS LLC1,027,944$8.66M0.18%new13F-HRTimelineGroup
RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P.948,249$7.98M0.08%new13F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources626,571$5.28M<0.01%new13F-HRTimelineGroup
Woodline Partners LP625,000$5.26M0.02%new13F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC291,277$2.45M<0.01%new13F-HRTimelineGroup
ADAGE CAPITAL PARTNERS GP, L.L.C.in group ADAGE CAPITAL PARTNERS GP, L.…274,375$2.31M<0.01%new13F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPgroup of 2 filers holding256,132$2.16MnewTimeline
Prosight Management, LP250,244$2.11M0.44%new13F-HRTimeline
RENAISSANCE TECHNOLOGIES LLC242,945$2.05M<0.01%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC234,510$1.97M<0.01%new13F-HR/ATimelineGroup
Stonepine Capital Management, LLC220,011$1.85M1.47%new13F-HRTimeline
Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P.203,799$1.72M<0.01%new13F-HRTimelineGroup
Carlyle Group Inc.in group Carlyle Group Inc.184,295$1.54M0.01%new13F-HRTimelineGroup
ACADIAN ASSET MANAGEMENT LLCin group ACADIAN ASSET MANAGEMENT LLC181,395$1.52M<0.01%new13F-HRTimelineGroup
NEXTBio Capital Management LP157,827$1.33M0.78%13F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC128,646$1.08M0.08%new13F-HR/ATimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC107,814$908K<0.01%new13F-HRTimelineGroup
DAFNA Capital Management LLC93,812$790K0.18%new13F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC88,856$748K<0.01%new13F-HRTimelineGroup
Burkehill Global Management, LP62,500$526K0.03%new13F-HRTimeline
LUMINUS MANAGEMENT LLC59,558$501K0.46%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC56,350$474K0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC55,723$469K<0.01%new13F-HRTimelineGroup
RBF Capital, LLC38,582$325K0.01%new13F-HR/ATimeline
BlackRock, Inc.in group BlackRock, Inc.36,585$308K<0.01%new13F-HRTimelineGroup
Maven Securities LTDin group Maven Securities LTD31,250$263K0.03%new13F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP25,896$218K<0.01%new13F-HRTimelineGroup
Rangeley Capital, LLC25,001$211K0.18%new13F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC25,000$210K<0.01%new13F-HRTimelineGroup
JOHNSON & JOHNSONin group JOHNSON & JOHNSON22,779$192K0.03%new13F-HR/ATimelineGroup
XTX Topco Ltdin group XTX Topco Ltd18,610$157K<0.01%new13F-HRTimelineGroup
GSA CAPITAL PARTNERS LLP17,763$150K0.01%new13F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP14,067$118K<0.01%new13F-HRTimelineGroup
TANG CAPITAL MANAGEMENT LLCin group TANG CAPITAL MANAGEMENT LLC6,158$51.9K<0.01%new13F-HRTimelineGroup
FNY Investment Advisers, LLC6,100$51K0.01%new13F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA5,449$46K<0.01%new13F-HRTimelineGroup
UBS Group AGin group UBS Group AG3,797$32K<0.01%new13F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY3,040$25.6K<0.01%new13F-HR/ATimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/1,288$10.8K<0.01%new13F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,072$9.03K<0.01%new13F-HRTimelineGroup
HOLLENCREST CAPITAL MANAGEMENT250$2.1K<0.01%new13F-HRTimeline
SIMPLEX TRADING, LLC87$732<0.01%new13F-HRTimeline
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS50$421<0.01%new13F-HRTimelineGroup
FMR LLCin group FMR LLC34$286<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.19$160<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO12$101<0.01%new13F-HRTimelineGroup
DANSKE BANK A/S1$8<0.01%new13F-HRTimeline