AC Immune Ownership | Who Owns AC Immune?

AC Immune Ownership Summary

AC Immune is owned by 24.38% institutional investors, 38.01% insiders, and 37.61% retail investors. Bvf inc/il is the largest institutional shareholder, holding 19.74% of ACIU shares. iShares Biotechnology ETF is the top mutual fund, with 0.38% of its assets in AC Immune shares.

ACIU Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	AC Immune	24.38%	38.01%	37.61%
Sector	Healthcare Stocks	488.17%	11.08%	-399.26%
Industry	Biotech Stocks	306.59%	11.10%	-217.69%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Bvf inc/il	19.82M	19.74%	$40.24M
Blackrock	2.61M	2.62%	$10.40M
Wells fargo & company/mn	995.64K	0.90%	$2.69M
Renaissance	740.20K	0.67%	$2.00M
Acadian asset management	411.70K	0.41%	$820.00K
Blackrock funding, inc. /de	411.31K	0.41%	$834.95K
Deutsche bank ag\	253.38K	0.23%	$684.11K
Handelsbanken fonder ab	150.00K	0.14%	$405.00K
Marshall wace, llp	135.84K	0.14%	$275.76K
Dimensional fund advisors lp	131.41K	0.12%	$354.68K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Bvf inc/il	19.82M	1.44%	$40.24M
Eversept partners, lp	100.75K	0.02%	$204.53K
Silverberg bernstein capital management	10.00K	0.01%	$20.30K
China universal asset management	20.97K	0.01%	$56.62K
Renaissance	740.20K	0.00%	$2.00M
Two sigma securities	10.09K	0.00%	$20.47K
Acadian asset management	411.70K	0.00%	$820.00K
Quinn opportunity partners	10.10K	0.00%	$20.50K
Handelsbanken fonder ab	150.00K	0.00%	$405.00K
Banque cantonale vaudoise	18.44K	0.00%	$37.00K

Top Buyers

Holder	Shares	% Assets	Change
Renaissance	740.20K	0.00%	94.19K
Dimensional fund advisors lp	131.41K	0.00%	74.36K
Blackrock	2.61M	0.00%	65.48K
Squarepoint ops	43.78K	0.00%	43.78K
Acadian asset management	411.70K	0.00%	40.52K

Top Sellers

Holder	Shares	% Assets	Change
Morgan stanley	78.67K	-	-1.31M
Redmile group	-	-	-1.03M
Avidity partners management lp	-	-	-825.00K
Blackrock funding, inc. /de	411.31K	-	-745.28K
Platinum investment management	-	-	-739.34K

New Positions

Holder	Shares	% Assets	Change	Value
Squarepoint ops	43.78K	0.00%	43.78K	$118.22K
Nomura	20.00K	0.00%	20.00K	$79.80K
Two sigma advisers, lp	13.41K	0.00%	13.41K	$36.21K
Two sigma securities	10.09K	0.00%	10.09K	$20.47K

Sold Out

Holder	Change
Farther finance advisors	-10.00
Qube research	-48.00
Sjs investment consulting	-200.00
Simplex trading	-635.00
Lazard asset management	-813.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Jun 30, 2025	40	-4.76%	24,481,622	-5.54%	24	3.66%	18	-	11	-26.67%
Mar 31, 2025	42	-10.64%	25,918,010	-5.30%	25	4.17%	19	-17.39%	14	-
Dec 31, 2024	46	-2.13%	27,366,858	-2.95%	24	3.79%	22	57.14%	14	-30.00%
Sep 30, 2024	47	-2.08%	28,199,176	-1.31%	28	3.42%	14	-39.13%	20	25.00%
Jun 30, 2024	48	17.07%	28,573,535	-1.35%	28	2.46%	23	-	16	128.57%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
iShares Biotechnology ETF	380.96K	0.38%	3.25K
BlackRock Health Sciences Term Trust	258.71K	0.26%	-370.12K
DWS ESG Biotech LC	253.39K	0.25%	-
Monega ARIAD Innovation R	130.00K	0.13%	-
BlackRock Health Sciences Opps Inv A	115.87K	0.12%	-242.44K
Handelsbanken Europa Småbolag (A1 SEK)	105.00K	0.10%	-
ALPS Medical Breakthroughs ETF	79.77K	0.08%	628.00
Fidelity Nasdaq Composite Index	63.34K	0.06%	-
BlackRock Health Sciences	62.90K	0.06%	-15.28K
Blackrock Health Sciences Trust	62.90K	0.06%	-15.28K

ACIU Ownership FAQ

Who Owns AC Immune?

AC Immune shareholders are primarily institutional investors at 24.38%, followed by 38.01% insiders and 37.61% retail investors. The average institutional ownership in AC Immune's industry, Biotech Stocks , is 306.59%, which AC Immune falls below.

Who owns the most shares of AC Immune?

AC Immune’s largest shareholders are Bvf inc/il (19.82M shares, 19.74%), Blackrock (2.61M shares, 2.62%), and Wells fargo & company/mn (995.64K shares, 0.90%). Together, they hold 23.27% of AC Immune’s total shares outstanding.

Does Blackrock own AC Immune?

Yes, BlackRock owns 2.62% of AC Immune, totaling 2.61M shares as of Jun 2024. This represents 0.00% of BlackRock's total assets, with a market value of 10.4M$. In the last quarter, BlackRock increased its holdings by 65.48K shares, a 2.58% change.

Who is AC Immune’s biggest shareholder by percentage of total assets invested?

Bvf inc/il is AC Immune’s biggest shareholder by percentage of total assets invested, with 1.44% of its assets in 19.82M AC Immune shares, valued at 40.24M$.

Who is the top mutual fund holder of AC Immune shares?

iShares Biotechnology ETF is the top mutual fund holder of AC Immune shares, with 0.38% of its total shares outstanding invested in 380.96K AC Immune shares.

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