Ac Immune SAACIU
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 47 institutions reported holding Ac Immune SA (ACIU) in their 13F filings, up 5 from Q4 2025. 8 opened new positions and 4 sold out. The largest holders were BVF Inc. ($54.5M), Wells Fargo & Company ($2.8M) and Millennium Management ($2.2M). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Ac Immune SA
- CUSIP
- H00263105
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $170K |
| Exits | 4 | $1.3M |
All 13F filers, Q4 2025 → Q1 2026: 542,964 shares bought and 1,240,159 shares sold, net −697,195 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 47 holders
| BVF Inc. | 1.74% | No change | 19,822,436 | $54.5M |
| Wells Fargo & Company | 0.00% | Reduce -0.2% | 1,004,284 | $2.8M |
| Millennium Management | 0.00% | Reduce -15.1% | 792,657 | $2.2M |
| Renaissance Technologies | 0.00% | Reduce -6.7% | 624,367 | $1.7M |
| BlackRock, Inc. | 0.00% | Add +4.4% | 524,278 | $1.4M |
| Arrowstreet Capital, Limited Partnership | 0.00% | Add +8.0% | 405,658 | $1.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +82.8% | 390,165 | $1.1M |
| Northern Trust Corp. | 0.00% | Reduce -1.2% | 278,513 | $766K |
| Citadel Advisors | 0.00% | Add +275.6% | 267,233 | $735K |
| Marshall Wace, LLP | 0.00% | Reduce -29.6% | 131,458 | $362K |
| Dauntless Investment Group, LLC | 0.83% | Reduce -7.1% | 107,489 | $296K |
| UBS Group AG | 0.00% | Reduce -47.7% | 101,629 | $279K |
| Deeter Investments LLP | 0.05% | No change | 100,000 | $275K |
| Acadian Asset Management LLC | 0.00% | Reduce -79.2% | 96,907 | $266K |
| Susquehanna International Group, LLP | 0.00% | Reduce -39.5% | 89,262 | $245K |
| Morgan Stanley | 0.00% | Reduce -5.4% | 89,253 | $245K |
| Geode Capital Management, LLC | 0.00% | No change | 63,601 | $175K |
| Jane Street Group, LLC | 0.00% | Add +438.7% | 57,696 | $159K |
| Two Sigma Investments, LP | 0.00% | Reduce -55.5% | 39,091 | $108K |
| Goldman Sachs Group Inc. | 0.00% | Add +16.6% | 21,632 | $59K |
| China Universal Asset Management Co., Ltd. | 0.00% | Add +9.1% | 17,852 | $49K |
| Bank of America Corp. | 0.00% | Reduce -18.8% | 17,437 | $48K |
| HRT Financial LP | 0.00% | New | 17,276 | $47K |
| XTX Topco Ltd | 0.00% | New | 14,304 | $39K |
| Gsa Capital Partners LLP | 0.00% | New | 11,530 | $32K |
| Jump Financial, LLC | 0.00% | New | 11,125 | $31K |
| Quinn Opportunity Partners LLC | 0.00% | No change | 10,100 | $28K |
| Silverberg Bernstein Capital Management LLC | 0.02% | No change | 10,000 | $28K |
| EFG International AG | 0.00% | Reduce -23.3% | 9,900 | $27K |
| JPMorgan Chase & Co. | 0.00% | Reduce -12.4% | 7,640 | $20K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +13.7% | 7,009 | $19K |
| Banque Cantonale Vaudoise | 0.00% | Reduce -11.0% | 7,021 | $19K |
| Simplex Trading, LLC | 0.00% | New | 6,620 | $18K |
| Barclays PLC | 0.00% | Add +114.4% | 5,791 | $16K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +7.5% | 5,247 | $14K |
| Citigroup Inc. | 0.00% | Add +0.4% | 2,811 | $8K |
| BNP Paribas Financial Markets | 0.00% | Reduce -2.8% | 2,410 | $7K |
| GF Fund Management Co. LTD. | 0.00% | Add +13.7% | 2,242 | $6K |
| Forum Finance Group S.A. | 0.00% | — | 2,000 | $5K |
| Activest Wealth Management | 0.00% | No change | 1,000 | $3K |
| PNC Financial Services Group, Inc. | 0.00% | New | 1,000 | $3K |
| Rockefeller Capital Management L.P. | 0.00% | No change | 1,000 | $3K |
| Royal Bank of Canada | 0.00% | Add +0.2% | 860 | $2K |
| Osaic Holdings, Inc. | 0.00% | No change | 221 | $607 |
| Strengthening Families & Communities, LLC | 0.00% | No change | 200 | $550 |
| Farther Finance Advisors, LLC | 0.00% | New | 43 | $120 |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 3 | $8 |
"% of holder's portfolio" is ACIU's weight in each manager's 13F, not the share of Ac Immune SA the manager owns.