Adicet Bio Ownership | Who Owns Adicet Bio?

Adicet Bio Ownership Summary

Adicet Bio is owned by 91.31% institutional investors, 0.92% insiders, and 7.77% retail investors. Ra capital management is the largest institutional shareholder, holding 17.16% of ACET shares. Franklin Biotechnology Discv A(acc)USD is the top mutual fund, with 4.19% of its assets in Adicet Bio shares.

ACET Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Adicet Bio	91.31%	0.92%	7.77%
Sector	Healthcare Stocks	35.49%	11.75%	52.76%
Industry	Biotech Stocks	34.83%	11.71%	53.46%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Ra capital management	1.18M	17.16%	$8.05M
Orbimed advisors	1.03M	14.92%	$7.00M
Franklin resources	626.57K	9.09%	$4.27M
Citadel advisors	381.82K	5.54%	$2.60M
Woodline partners lp	313.12K	4.54%	$2.13M
Adage capital partners gp	274.38K	3.98%	$1.87M
Prosight management, lp	250.24K	3.63%	$1.70M
Renaissance	232.59K	3.38%	$1.58M
Stonepine capital management	221.96K	3.22%	$1.51M
Alyeska investment group	203.80K	2.96%	$1.39M

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
Stonepine capital management	221.96K	0.61%	$1.51M
Rangeley capital	56.00K	0.37%	$381.36K
Prosight management, lp	250.24K	0.28%	$1.70M
Dafna capital management	93.81K	0.15%	$638.86K
Orbimed advisors	1.03M	0.14%	$7.00M
Wealthedge investment advisors	300.05K	0.09%	$243.10K
Ra capital management	1.18M	0.09%	$8.05M
Johnson & johnson	22.78K	0.02%	$155.13K

Top Buyers

Holder	Shares	% Assets	Change
Norges bank	429.55K	0.00%	429.55K
Citadel advisors	381.82K	0.00%	274.01K
Ra capital management	1.18M	0.09%	234.38K
Two sigma advisers, lp	780.98K	0.00%	214.94K
Susquehanna group, llp	477.68K	0.00%	113.33K

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
Vanguard fiduciary trust	50.33K	0.00%	50.33K	$342.77K
Trexquant investment lp	43.67K	0.00%	43.67K	$297.37K
Jane street group	37.08K	-	37.08K	$252.54K
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
Fmr	-34.00
Thompson investment management	-80.00
Point72 (difc)	-95.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Mar 31, 2026	47	-4.08%	6,292,229	-6.38%	91	0.66%	24	50.00%	7	-78.79%
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%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
Franklin Biotechnology Discv A(acc)USD	401.35K	4.19%	-
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 91.31%, followed by 0.92% insiders and 7.77% retail investors. The average institutional ownership in Adicet Bio's industry, Biotech Stocks , is 34.83%, which Adicet Bio exceeds.

Who owns the most shares of Adicet Bio?

Adicet Bio’s largest shareholders are Ra capital management (1.18M shares, 17.16%), Orbimed advisors (1.03M shares, 14.92%), and Franklin resources (626.57K shares, 9.09%). Together, they hold 41.17% of Adicet Bio’s total shares outstanding.

Does Blackrock own Adicet Bio?

BlackRock is not among the top 10 institutional shareholders of Adicet Bio.

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 4.19% of its total shares outstanding invested in 401.35K Adicet Bio shares.

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