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AC Immune
ACIU

46 hedge funds and large institutions have $69M invested in AC Immune in 2026 Q1 according to their latest regulatory filings, with 9 funds opening new positions, 13 increasing their positions, 16 reducing their positions, and 4 closing their positions.

New
Increased
Maintained
Reduced
Closed

1,176% more call options, than puts

Call options by funds: $1.61M | Put options by funds: $126K

125% more first-time investments, than exits

New positions opened: 9 | Existing positions closed: 4

12% more funds holding

Funds holding: 41 → 46 (+5)

1.03% less ownership

Funds ownership: 25.67% → 24.64% (-1%)

15% less capital invested

Capital invested by funds: $80.9M → $69M (-$12M)

19% less repeat investments, than reductions

Existing positions increased: 13 | Existing positions reduced: 16

Holders
46
Holders Change
+5
Holders Change %
+12.2%
% of All Funds
0.57%
Holding in Top 10
–
Holding in Top 10 Change
–
Holding in Top 10 Change %
–
% of All Funds
–
New
9
Increased
13
Reduced
16
Closed
4
Calls
$1.61M
Puts
$126K
Net Calls
+$1.48M
Net Calls Change
+$481K

Top Buyers

Rank Fund Capital Flow
1
Citadel Advisors
Citadel Advisors
Florida
+$609K
2
Dimensional Fund Advisors
Dimensional Fund Advisors
Texas
+$549K
3
Jane Street
Jane Street
New York
+$146K
4
Arrowstreet Capital
Arrowstreet Capital
Massachusetts
+$93.3K
5
BlackRock
BlackRock
New York
+$68.7K

Top Sellers

Rank Fund Capital Flow
1
Point72 Asset Management
Point72 Asset Management
Connecticut
-$1.2M
2
Acadian Asset Management
Acadian Asset Management
Massachusetts
-$1.14M
3
Millennium Management
Millennium Management
New York
-$437K
4
UBS Group
UBS Group
Switzerland
-$288K
5
Susquehanna International Group
Susquehanna International Group
Pennsylvania
-$181K
Name Holding Trade Value Shares
Change 		Change in
Stake
QOP
26
Quinn Opportunity Partners
Virginia
$27.8K – – –
SBCM
27
Silverberg Bernstein Capital Management
New York
$27.5K – – –
EI
28
EFG International
$27.2K -$9.32K -3,000 -23%
JP Morgan Chase
29
JP Morgan Chase
New York
$19.6K -$3.36K -1,081 -12%
TRCT
30
Tower Research Capital (TRC)
New York
$19.3K +$2.62K +843 +14%
BCV
31
Banque Cantonale Vaudoise
Switzerland
$19K -$2.71K -871 -11%
Simplex Trading
32
Simplex Trading
Illinois
$18.2K +$20.6K +6,620 New
Barclays
33
Barclays
United Kingdom
$15.9K +$9.6K +3,090 +114%
Mirae Asset Global Investments
34
Mirae Asset Global Investments
South Korea
$14.4K +$1.14K +368 +8%
Citigroup
35
Citigroup
New York
$7.73K +$31 +10 +0.4%
BNP Paribas Financial Markets
36
BNP Paribas Financial Markets
France
$6.63K -$217 -70 -3%
GFM
37
GF Fund Management
China
$6.17K +$838 +270 +14%
FFG
38
Forum Finance Group
$5K +$6.21K +2,000 New
AWM
39
Activest Wealth Management
Florida
$2.75K – – –
Rockefeller Capital Management
40
Rockefeller Capital Management
New York
$2.75K – – –
PNC Financial Services Group
41
PNC Financial Services Group
Pennsylvania
$2.75K +$3.1K +1,000 New
Royal Bank of Canada
42
Royal Bank of Canada
Ontario, Canada
$2K +$6 +2 +0.2%
Osaic Holdings
43
Osaic Holdings
Arizona
$607 – – –
SFCL
44
Strengthening Families & Communities LLC
Massachusetts
$550 – – –
FFA
45
Farther Finance Advisors
California
$120 +$134 +43 New
CIAM
46
Caitong International Asset Management
Hong Kong
$8 +$9 +3 New
Point72 Asset Management
47
Point72 Asset Management
Connecticut
– -$1.2M -384,845 Closed
SEI Investments
48
SEI Investments
Pennsylvania
– -$49.9K -15,884 Closed
LSA
49
Leonteq Securities AG
Switzerland
– -$9.42K -3,000 Closed
SS
50
SBI Securities
Japan
– -$1.72K -547 Closed
1
2

ACIU Hedge Fund Activity: Q1 2026 in Review

46 of the 8,126 institutional investors tracked by Wall St. Rank reported a position in AC Immune (ACIU) for Q1 2026, worth a combined $69M — down 15% from $80.9M a quarter earlier.

Buyers outnumbered sellers: 9 funds opened new ACIU positions and 4 closed out — a net gain of 5 holders — while 13 added to existing stakes and 16 trimmed.

The largest buyer was Citadel Advisors, adding an estimated $609K. The largest seller was Point72 Asset Management, exiting entirely with an estimated $1.2M sold.

  • 46 institutional investors held AC Immune (ACIU) as of Q1 2026, up from 41 in Q4 2025.
  • Funds reported $69M of AC Immune stock for Q1 2026, down 15% quarter-over-quarter.
  • 9 funds opened new AC Immune positions in Q1 2026 and 4 closed out, a net change of +5 holders.
  • The largest AC Immune buyer in Q1 2026 was Citadel Advisors, an estimated $609K added.
  • The largest AC Immune seller in Q1 2026 was Point72 Asset Management, an estimated $1.2M sold.

Based on aggregated 13F filings for Q1 2026.