AC Immune ACIU Institutional Ownership

NASDAQ ACIU

$2.87 -0.06 (-2.04%)

As of: Sep 4, 2026 · 11:51 AM EDT

Institutions by Trading Activity

43 Institutions

Increased 16 37.2%

Unchanged 11 25.6%

Reduced 16 37.2%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

24.29%

▼-0.61 pp QoQ

Shares Held by Institutions

24.47Mn

of 100.75Mn outstanding

▲+0.29% QoQ

Shares Outstanding

100.75Mn

76.28Mn held outside 13F filers

Institutional Investors

filed 13F for Jun 2026

▼-3 vs prior quarter

Net Shares Added (QoQ)

+71.00K

accumulated since last quarter

Value of Holdings

$71.70Mn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

AC Immune SA (NASDAQ:ACIU) appears in 43 institutional 13F filings for the quarter ending June 2026.

They owned 24.3% of outstanding stock in June 2026, down from 24.9% the prior quarter.
Their total shares held in ACIU increased 0.29% from the prior quarter, while the number of investors in AC Immune increased 4.88% year over year.
Of these 43 funds, 16 grew their exposure to AC Immune, 16 cut back, and 11 maintained positions.
Institutional investors collectively held 24.47Mn shares in AC Immune as of June 2026, up by 71.0K shares quarter on quarter, and up 156.21K shares year over year.
As of June 30, 2026, BVF INC/IL held the largest stake in AC Immune with 19.82Mn shares, accounting for 19.67% of total shares outstanding.
Leading buyers of AC Immune shares for the quarter ending June 2026 were RENAISSANCE TECHNOLOGIES LLC (215.76K), Qube Research & Technologies Ltd (92.35K), TWO SIGMA INVESTMENTS, LP (63.73K), Morgan Stanley (42.56K), Verdad Advisers, LP (16.3K).
The largest sellers of AC Immune for the quarter ending June 2026 were ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (172.7K), CITADEL ADVISORS LLC (59.63K), DIMENSIONAL FUND ADVISORS LP (50.08K), JANE STREET GROUP, LLC (38.22K), SUSQUEHANNA INTERNATIONAL GROUP, LLP (35.89K).
AC Immune's 10 largest shareholders as of June 2026 include BVF INC/IL (19.82Mn), Wells Fargo & Company/Mn (1.0Mn), RENAISSANCE TECHNOLOGIES LLC (840.13K), MILLENNIUM MANAGEMENT LLC (773.59K), BlackRock, Inc. (519.27K), DIMENSIONAL FUND ADVISORS LP (340.08K), ARROWSTREET CAPITAL, LIMITED PARTNERSHIP (232.95K), CITADEL ADVISORS LLC (207.61K), Morgan Stanley (131.82K), TWO SIGMA INVESTMENTS, LP (102.82K) per Business Quant data.

Form 13F Holdings

43 Institutional Holders

Report period 30 Jun, 2026

Total shares held 24.47Mn

Of outstanding 24.29%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BVF INC/IL	0001056807	19,822,436	19.67%	0	0.00%	$47.18Mn
2	Wells Fargo & Company/Mn	0000072971	1,004,041	1.00%	▼243	-0.02%	$2.39Mn
3	RENAISSANCE TECHNOLOGIES LLC	0001037389	840,127	0.83%	▲215,760	+34.56%	$2.00Mn
4	MILLENNIUM MANAGEMENT LLC	0001273087	773,594	0.77%	▼19,063	-2.40%	$1.84Mn
5	BlackRock, Inc.	0002012383	519,274	0.52%	▼5,004	-0.95%	$1.24Mn
6	DIMENSIONAL FUND ADVISORS LP	0000354204	340,082	0.34%	▼50,083	-12.84%	$812.15K
7	ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	0001164508	232,953	0.23%	▼172,705	-42.57%	$554.43K
8	CITADEL ADVISORS LLC	0001423053	207,606	0.21%	▼59,627	-22.31%	$494.10K
9	Morgan Stanley	0000895421	131,815	0.13%	▲42,562	+47.69%	$313.72K
10	TWO SIGMA INVESTMENTS, LP	0001179392	102,825	0.10%	▲63,734	+163.04%	$244.72K
11	Qube Research & Technologies Ltd	0001729829	92,351	0.09%	▲92,351	0.00%	$219.80K
12	UBS Group AG	0001610520	85,614	0.08%	▼16,015	-15.76%	$203.76K
13	GEODE CAPITAL MANAGEMENT, LLC	0001214717	61,854	0.06%	▼1,747	-2.75%	$147.21K
14	SUSQUEHANNA INTERNATIONAL GROUP, LLP	0001446194	53,369	0.05%	▼35,893	-40.21%	$127.02K
15	Jump Financial, LLC	0001831577	24,064	0.02%	▲12,939	+116.31%	$57.27K
16	JANE STREET GROUP, LLC	0001595888	19,475	0.02%	▼38,221	-66.25%	$46.35K
17	Verdad Advisers, LP	0001812822	16,300	0.02%	▲16,300	0.00%	$38.79K
18	China Universal Asset Management Co., Ltd.	0001906594	16,197	0.02%	▼1,655	-9.27%	$38.55K
19	Goldman Sachs Group Inc	0000886982	14,497	0.01%	▼7,135	-32.98%	$34.50K
20	Quadrature Capital Ltd	0001651424	12,991	0.01%	▲12,991	0.00%	$30.92K

Showing 1 to 20 of 43 holders