Adicet Bio Ownership | Who Owns Adicet Bio?

Adicet Bio Ownership Summary

Adicet Bio is owned by 8.03% institutional investors, 1.49% insiders, and 90.49% retail investors. Orbimed advisors is the largest institutional shareholder, holding 12.57% of ACET shares. Vanguard US Total Market Shares ETF is the top mutual fund, with 2.51% of its assets in Adicet Bio shares.

ACET Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Adicet Bio	8.03%	1.49%	90.49%
Sector	Healthcare Stocks	42.64%	10.86%	46.50%
Industry	Biotech Stocks	45.45%	10.77%	43.78%

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
Goldman sachs group	3.75M	4.12%	$3.04M
Carlyle group	2.95M	3.24%	$2.39M
Aquilo capital management	2.46M	2.70%	$1.85M
Acadian asset management	2.27M	2.49%	$1.83M
Renaissance	1.83M	2.01%	$1.48M
Millennium management	1.22M	1.34%	$924.02K
Blackrock	1.02M	1.29%	$1.23M

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Aquilo capital management	2.46M	3.32%	$1.85M
Tang capital management	8.22M	0.26%	$6.66M
Orbimed advisors	11.45M	0.22%	$9.27M
Regeneron pharmaceuticals	968.18K	0.11%	$784.42K
Wealthedge investment advisors	300.05K	0.09%	$243.10K
Ra capital management	7.54M	0.08%	$6.11M
Johnson & johnson	364.47K	0.06%	$295.30K
Carlyle group	2.95M	0.06%	$2.39M
Rangeley capital	75.00K	0.05%	$60.77K
Rbf capital	617.32K	0.02%	$500.15K

Top Buyers

Holder	Shares	% Assets	Change
Renaissance	1.83M	0.00%	675.13K
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
Acadian asset management	2.27M	0.00%	190.89K

Top Sellers

Holder	Shares	% Assets	Change
Balyasny asset management	-	-	-6.18M
Vanguard group	-	-	-3.27M
Blackrock	1.02M	-	-2.36M
Schonfeld strategic advisors	479.11K	0.00%	-1.40M
Commodore capital lp	-	-	-1.37M

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
Marshall wace, llp	51.73K	-	51.73K	$41.90K
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
Pnc financial services group	-168.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
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%
Sep 30, 2024	63	-27.59%	56,696,707	-11.34%	62	0.95%	24	-47.83%	20	-16.67%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Vanguard US Total Market Shares ETF	2.07M	2.51%	-
Vanguard Total Stock Mkt Idx Inv	2.03M	2.44%	-44.32K
Bridgeway Ultra-Small Company	810.30K	0.97%	-
Vanguard Institutional Extnd Mkt Idx Tr	741.58K	0.89%	-337.92K
Fidelity Extended Market Index	329.50K	0.40%	-2.71K
A4Investments SICAV SIF ACCI IlanaA2EURH	325.00K	0.39%	-
Fidelity Enhanced Small Cap ETF	250.56K	0.30%	410.00
Goldman Sachs Small Cp Val Insghts Instl	171.19K	0.21%	171.19K
BlackRock Extended Equity Market K	149.99K	0.18%	-64.00
Extended Equity Market Fund K	145.50K	0.18%	-2.90K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Oct 08, 2025	ORBIMED ADVISORS LLC	-	Buy	$3.50M
Oct 08, 2025	ORBIMED ADVISORS LLC	-	Buy	$1.50M
Jun 05, 2024	Kauffman Michael	-	Sell	$8.44K
Jan 25, 2024	ORBIMED ADVISORS LLC		Buy	$2.50M
Jan 25, 2024	ORBIMED ADVISORS LLC		Buy	$4.42M

Insider Transactions Trends

Date	Buy	Sell
2025 Q4	2	-
2025 Q2	-	-
2025 Q1	-	-
2024 Q3	-	-
2024 Q2	-	1

ACET Ownership FAQ

Who Owns Adicet Bio?

Adicet Bio shareholders are primarily institutional investors at 8.03%, followed by 1.49% insiders and 90.48% retail investors. The average institutional ownership in Adicet Bio's industry, Biotech Stocks , is 45.45%, 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?

Vanguard US Total Market Shares ETF is the top mutual fund holder of Adicet Bio shares, with 2.51% of its total shares outstanding invested in 2.07M Adicet Bio shares.

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