AC Immune
ACIU
41 hedge funds and large institutions have $48.5M invested in AC Immune in 2025 Q1 according to their latest regulatory filings, with 5 funds opening new positions, 15 increasing their positions, 14 reducing their positions, and 9 closing their positions.
107% more call options, than puts
Call options by funds: $89K | Put options by funds: $43K
7% more repeat investments, than reductions
Existing positions increased: 15 | Existing positions reduced: 14
1.26% less ownership
Funds ownership: 27.46% → 26.2% (-1.3%)
9% less funds holding
Funds holding: 45 → 41 (-4)
34% less capital invested
Capital invested by funds: $73.9M → $48.5M (-$25.4M)
44% less first-time investments, than exits
New positions opened: 5 | Existing positions closed: 9
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BI
BVF Inc
San Francisco,
California
|
+$756K |
| 2 |
Acadian Asset Management
Boston,
Massachusetts
|
+$435K |
| 3 |
Marshall Wace
London,
United Kingdom
|
+$367K |
| 4 |
Citadel Advisors
Miami,
Florida
|
+$362K |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
+$267K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RG
Redmile Group
San Francisco,
California
|
-$2.79M |
| 2 |
BlackRock
New York
|
-$2.66M |
| 3 |
PIM
Platinum Investment Management
Sydney Australia 2000,
Australia
|
-$536K |
| 4 |
Morgan Stanley
New York
|
-$238K |
| 5 |
Two Sigma Investments
New York
|
-$110K |
ACIU Hedge Fund Activity: Q1 2025 in Review
41 of the 7,472 institutional investors tracked by Wall St. Rank reported a position in AC Immune (ACIU) for Q1 2025, worth a combined $48.5M — down 34% from $73.9M a quarter earlier.
Sellers outnumbered buyers: 9 funds closed out of ACIU and 5 opened new positions — a net loss of 4 holders — while 14 trimmed existing stakes and 15 added.
The largest buyer was BVF Inc, adding an estimated $756K. The largest seller was Redmile Group, exiting entirely with an estimated $2.79M sold.
- 41 institutional investors held AC Immune (ACIU) as of Q1 2025, down from 45 in Q4 2024.
- Funds reported $48.5M of AC Immune stock for Q1 2025, down 34% quarter-over-quarter.
- 5 funds opened new AC Immune positions in Q1 2025 and 9 closed out, a net change of -4 holders.
- The largest AC Immune buyer in Q1 2025 was BVF Inc, an estimated $756K added.
- The largest AC Immune seller in Q1 2025 was Redmile Group, an estimated $2.79M sold.
Based on aggregated 13F filings for Q1 2025.