AC Immune SA (ACIU) — Institutional Holders, Q2 2026
43 institutional investment managers reported a ACIU position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $58.2M. Every filer is listed below, ranked by position value. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ACIU in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- RENAISSANCE TECHNOLOGIESAdded · +215,760 sh+$513.5K
- Qube Research & Technologies LtdNew · +92,351 sh+$219.8K
- TWO SIGMA INVESTMENTSAdded · +63,734 sh+$151.7K
- MORGAN STANLEYAdded · +42,562 sh+$101.3K
- Verdad AdvisersNew · +16,300 sh+$38.8K
Biggest sellers
- NORTHERNSold out · -278,513 sh-$662.9K
- ARROWSTREET CAPITAL, LIMITED PARTNERSHIPTrimmed · -172,705 sh-$411.0K
- MARSHALL WACE, LLPSold out · -131,458 sh-$312.9K
- Dauntless Investment GroupSold out · -107,489 sh-$255.8K
- Deeter Investments LLPSold out · -100,000 sh-$238.0K
ACIU 13F holders ranked 1–43 of 43
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BVF#1 · 19,822,436 sh | 19,822,436 | $47.2M | 1.21% | 0.0% |
| 2 | WELLS FARGO & COMPANY#2 · 1,004,041 sh | 1,004,041 | $2.4M | <0.01% | 0.0% |
| 3 | RENAISSANCE TECHNOLOGIES#3 · 840,127 sh | 840,127 | $2.0M | <0.01% | +34.6% |
| 4 | MILLENNIUM MANAGEMENT#4 · 773,594 sh | 773,594 | $1.8M | <0.01% | -2.4% |
| 5 | BlackRock#5 · 519,274 sh | 519,274 | $1.2M | 0.00% | -1.0% |
| 6 | DIMENSIONAL FUND ADVISORS#6 · 340,082 sh | 340,082 | $812.1K | <0.01% | -12.8% |
| 7 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#7 · 232,953 sh | 232,953 | $554.4K | <0.01% | -42.6% |
| 8 | CITADEL ADVISORS#8 · 207,606 sh | 207,606 | $494.1K | <0.01% | -22.3% |
| 9 | MORGAN STANLEY#9 · 131,815 sh | 131,815 | $313.7K | 0.00% | +47.7% |
| 10 | TWO SIGMA INVESTMENTS#10 · 102,825 sh | 102,825 | $244.7K | <0.01% | +163.0% |
| 11 | Qube Research & Technologies Ltd#11 · 92,351 sh | 92,351 | $219.8K | <0.01% | New |
| 12 | UBS Group AG#12 · 85,614 sh | 85,614 | $203.8K | 0.00% | -15.8% |
| 13 | GEODE CAPITAL MANAGEMENT#13 · 61,854 sh | 61,854 | $147.2K | 0.00% | -2.7% |
| 14 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#14 · 53,369 sh | 53,369 | $127.0K | 0.00% | -40.2% |
| 15 | Jump Financial#15 · 24,064 sh | 24,064 | $57.3K | <0.01% | +116.3% |
| 16 | JANE STREET GROUP#16 · 19,475 sh | 19,475 | $46.4K | 0.00% | -66.2% |
| 17 | Verdad Advisers#17 · 16,300 sh | 16,300 | $38.8K | 0.04% | New |
| 18 | China Universal Asset Management , Ltd.#18 · 16,197 sh | 16,197 | $38.5K | <0.01% | -9.3% |
| 19 | GOLDMAN SACHS GROUP#19 · 14,497 sh | 14,497 | $34.5K | 0.00% | -33.0% |
| 20 | Quadrature Capital Ltd#20 · 12,991 sh | 12,991 | $30.9K | <0.01% | New |
| 21 | SG Americas Securities#21 · 10,327 sh | 10,327 | $25.0K | 0.00% | New |
| 22 | AXQ CAPITAL#22 · 10,398 sh | 10,398 | $24.7K | <0.01% | New |
| 23 | Quinn Opportunity Partners#23 · 10,100 sh | 10,100 | $24.0K | <0.01% | 0.0% |
| 24 | Silverberg Bernstein Capital Management#24 · 10,000 sh | 10,000 | $23.8K | — | 0.0% |
| 25 | EFG International AG#25 · 9,900 sh | 9,900 | $23.6K | <0.01% | 0.0% |
| 26 | JPMORGAN CHASE#26 · 7,798 sh | 7,798 | $20.7K | 0.00% | +2.1% |
| 27 | BARCLAYS PLC#27 · 7,278 sh | 7,278 | $17.3K | 0.00% | +25.7% |
| 28 | Banque Cantonale Vaudoise#28 · 7,021 sh | 7,021 | $17.0K | <0.01% | 0.0% |
| 29 | Mirae Asset Global Investments , Ltd.#29 · 4,552 sh | 4,552 | $10.8K | 0.00% | -13.2% |
| 30 | Tower Research Capital (TRC)#30 · 4,101 sh | 4,101 | $9.8K | <0.01% | -41.5% |
| 31 | CITIGROUP#31 · 4,012 sh | 4,012 | $9.5K | 0.00% | +42.7% |
| 32 | BNP PARIBAS FINANCIAL MARKETS#32 · 2,699 sh | 2,699 | $6.4K | 0.00% | +12.0% |
| 33 | GF FUND MANAGEMENT LTD.#33 · 2,084 sh | 2,084 | $5.0K | — | -7.0% |
| 34 | Forum Finance Group S.A.#34 · 2,000 sh | 2,000 | $4.0K | <0.01% | 0.0% |
| 35 | ROYAL BANK OF CANADA#35 · 1,289 sh | 1,289 | $3.0K | 0.00% | +49.9% |
| 36 | SBI Securities , Ltd.#36 · 1,197 sh | 1,197 | $2.8K | — | New |
| 37 | Rockefeller Capital Management L.P.#37 · 1,000 sh | 1,000 | $2.4K | 0.00% | 0.0% |
| 38 | Activest Wealth Management#38 · 1,000 sh | 1,000 | $2.4K | — | 0.0% |
| 39 | PNC FINANCIAL SERVICES GROUP#39 · 1,000 sh | 1,000 | $2.4K | 0.00% | 0.0% |
| 40 | OSAIC#40 · 220 sh | 220 | $523.00 | 0.00% | -0.5% |
| 41 | Strengthening Families & Communities#41 · 200 sh | 200 | $476.00 | — | 0.0% |
| 42 | Farther Finance Advisors#42 · 43 sh | 43 | $102.00 | — | 0.0% |
| 43 | Caitong International Asset Management , Ltd#43 · 35 sh | 35 | $83.00 | 0.00% | +1066.7% |
Funds that sold out of ACIU in Q2 2026 (10)
Held ACIU at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| NORTHERN278,513 sh | 278,513 | $765.9K |
| MARSHALL WACE, LLP131,458 sh | 131,458 | $361.5K |
| Dauntless Investment Group107,489 sh | 107,489 | $295.6K |
| Deeter Investments LLP100,000 sh | 100,000 | $275.0K |
| ACADIAN ASSET MANAGEMENT96,907 sh | 96,907 | $266.0K |
| BANK OF AMERICA17,437 sh | 17,437 | $48.0K |
| HRT FINANCIAL17,276 sh | 17,276 | $47.0K |
| XTX Topco Ltd14,304 sh | 14,304 | $39.3K |
| GSA CAPITAL PARTNERS LLP11,530 sh | 11,530 | $32.0K |
| SIMPLEX TRADING6,620 sh | 6,620 | $18.2K |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.