Adicet Bio Ownership | Who Owns Adicet Bio?

Adicet Bio Ownership Summary

Adicet Bio is owned by 1.06% institutional investors, 0.90% insiders, and 98.04% retail investors. Orbimed advisors is the largest institutional shareholder, holding 12.57% of ACET shares. Franklin Biotechnology Discv A(acc)USD is the top mutual fund, with 4.18% of its assets in Adicet Bio shares.

ACET Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Adicet Bio	1.06%	0.90%	98.04%
Sector	Healthcare Stocks	232.86%	10.65%	-143.51%
Industry	Biotech Stocks	382.13%	10.41%	-292.54%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Orbimed advisors	11.45M	12.57%	$9.27M
Tang capital management	8.22M	9.03%	$6.66M
Ra capital management	7.54M	8.28%	$6.11M
Aquilo capital management	2.46M	2.70%	$1.85M
Carlyle group	184.29K	2.67%	$1.26M
Millennium management	1.22M	1.34%	$924.02K
Blackrock	1.02M	1.29%	$1.23M
Regeneron pharmaceuticals	60.51K	1.06%	$509.50K
Bridgeway capital management	901.60K	0.99%	$730.48K
Two sigma investments, lp	854.57K	0.94%	$692.37K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Aquilo capital management	2.46M	3.32%	$1.85M
Regeneron pharmaceuticals	60.51K	1.51%	$509.50K
Tang capital management	8.22M	0.26%	$6.66M
Orbimed advisors	11.45M	0.22%	$9.27M
Wealthedge investment advisors	300.05K	0.09%	$243.10K
Ra capital management	7.54M	0.08%	$6.11M
Rangeley capital	75.00K	0.05%	$60.77K
Rbf capital	617.32K	0.02%	$500.15K
Bridgeway capital management	901.60K	0.02%	$730.48K
Carlyle group	184.29K	0.01%	$1.26M

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	429.55K	0.00%	429.55K
Two sigma investments, lp	854.57K	0.00%	341.76K
Two sigma advisers, lp	780.98K	0.00%	214.94K
Susquehanna group, llp	477.68K	0.00%	113.33K
Aqr capital management	136.76K	0.00%	113.11K

Top Sellers

Holder	Shares	% Assets	Change
Balyasny asset management	-	-	-6.18M
Goldman sachs group	-	-	-3.75M
Vanguard group	-	-	-3.27M
Blackrock	1.02M	-	-2.36M
Acadian asset management	-	-	-2.27M

New Positions

Holder	Shares	% Assets	Change	Value
Norges bank	429.55K	0.00%	429.55K	$413.23K
Royal bank of canada	80.11K	-	80.11K	$65.00K
Rangeley capital	75.00K	0.05%	75.00K	$60.77K
Vanguard fiduciary trust	50.33K	0.00%	50.33K	$342.77K
Two sigma securities	25.27K	0.00%	25.27K	$20.48K

Sold Out

Holder	Change
Zurcher kantonalbank (zurich cantonalbank)	-2.00
Nelson, van denburg & campbell wealth management group	-7.00
Thompson investment management	-80.00
Point72 (difc)	-95.00
Citigroup	-166.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	1	-98.11%	60,511	-99.88%	1	0.03%	-	-100.00%	1	-90.00%
Sep 30, 2025	10	-76.74%	7,311,551	-84.54%	8	0.30%	1	-95.00%	1	-90.91%
Jun 30, 2025	48	-17.24%	51,603,072	-7.61%	56	1.51%	21	16.67%	14	-33.33%
Mar 31, 2025	6	-90.63%	23,280,601	-59.60%	25	0.64%	-	-100.00%	3	-86.36%
Dec 31, 2024	63	-	57,546,909	1.50%	63	1.63%	21	-8.70%	22	10.00%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Franklin Biotechnology Discv A(acc)USD	401.35K	4.18%	-
Vanguard US Total Market Shares ETF	2.07M	2.51%	-
Franklin Biotechnology Discovery A	225.19K	2.35%	-
Vanguard Total Stock Mkt Idx Inv	213.12K	2.22%	1.60K
Vanguard Institutional Extnd Mkt Idx Tr	99.25K	1.03%	-
Bridgeway Ultra-Small Company	50.64K	0.53%	-
Fidelity Extended Market Index	47.93K	0.51%	-209.00
Fidelity Enhanced Small Cap ETF	250.56K	0.30%	410.00
A4Investments SICAV SIF ACCI IlanaA2EURH	25.00K	0.26%	-
Goldman Sachs Small Cp Val Insghts Instl	171.19K	0.21%	171.19K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 18, 2026	RA CAPITAL MANAGEMENT, L.P.	-	Buy	$525.02K
Feb 20, 2026	RA CAPITAL MANAGEMENT, L.P.	-	Buy	$543.44K
Feb 19, 2026	RA CAPITAL MANAGEMENT, L.P.	-	Buy	$535.47K
Apr 07, 2026	ORBIMED ADVISORS LLC	-	Sell	$191.45K
Apr 07, 2026	ORBIMED ADVISORS LLC	-	Sell	$15.31K

Insider Transactions Trends

Date	Buy	Sell
2026 Q2	-	4
2026 Q1	-	-
2025 Q4	2	-
2025 Q2	-	-
2025 Q1	-	-

ACET Ownership FAQ

Who Owns Adicet Bio?

Adicet Bio shareholders are primarily institutional investors at 1.06%, followed by 0.90% insiders and 98.04% retail investors. The average institutional ownership in Adicet Bio's industry, Biotech Stocks , is 382.13%, which Adicet Bio falls below.

Who owns the most shares of Adicet Bio?

Adicet Bio’s largest shareholders are Orbimed advisors (11.45M shares, 12.57%), Tang capital management (8.22M shares, 9.03%), and Ra capital management (7.54M shares, 8.28%). Together, they hold 29.88% of Adicet Bio’s total shares outstanding.

Does Blackrock own Adicet Bio?

Yes, BlackRock owns 1.29% of Adicet Bio, totaling 1.02M shares as of Jun 2024. This represents 0% of BlackRock's total assets, with a market value of 1.23M$. In the last quarter, BlackRock decreased its holdings by -2.356M shares, a -69.84% change.

Who is Adicet Bio’s biggest shareholder by percentage of total assets invested?

Aquilo capital management is Adicet Bio’s biggest shareholder by percentage of total assets invested, with 3.32% of its assets in 2.46M Adicet Bio shares, valued at 1.85M$.

Who is the top mutual fund holder of Adicet Bio shares?

Franklin Biotechnology Discv A(acc)USD is the top mutual fund holder of Adicet Bio shares, with 4.18% of its total shares outstanding invested in 401.35K Adicet Bio shares.

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