ACIU AC Immune SA
AC Immune SA (ACIU) Institutional Ownership
What the institutions did with ACIU last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeOwnership map
Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BVF INC/IL | 19.8M | 81.0% |
| WELLS FARGO & COMPANY/MN | 1.0M | 4.1% |
| RENAISSANCE TECHNOLOGIES LLC | 840.1K | 3.4% |
| MILLENNIUM MANAGEMENT LLC | 773.6K | 3.2% |
| BlackRock, Inc. | 519.3K | 2.1% |
| DIMENSIONAL FUND ADVISORS LP | 340.1K | 1.4% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 233.0K | 1.0% |
| CITADEL ADVISORS LLC | 207.6K | 0.8% |
| MORGAN STANLEY | 131.8K | 0.5% |
| TWO SIGMA INVESTMENTS, LP | 102.8K | 0.4% |
| Qube Research & Technologies Ltd | 92.4K | 0.4% |
| UBS Group AG | 85.6K | 0.3% |
| GEODE CAPITAL MANAGEMENT, LLC | 61.9K | 0.3% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 53.4K | 0.2% |
| Jump Financial, LLC | 24.1K | 0.1% |
| JANE STREET GROUP, LLC | 19.5K | 0.1% |
| Verdad Advisers, LP | 16.3K | 0.1% |
| China Universal Asset Management Co., Ltd. | 16.2K | 0.1% |
| GOLDMAN SACHS GROUP INC | 14.5K | 0.1% |
| Quadrature Capital Ltd | 13.0K | 0.1% |
| AXQ CAPITAL, LP | 10.4K | 0.0% |
| SG Americas Securities, LLC | 10.3K | 0.0% |
| Quinn Opportunity Partners LLC | 10.1K | 0.0% |
| Silverberg Bernstein Capital Management LLC | 10.0K | 0.0% |
| EFG International AG | 9.9K | 0.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| NORTHERN TRUST CORP | Sold Out | 278.5K | 0 | -278.5K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 624.4K | 840.1K | +215.8K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 405.7K | 233.0K | -172.7K |
| MARSHALL WACE, LLP | Sold Out | 131.5K | 0 | -131.5K |
| Dauntless Investment Group, LLC | Sold Out | 107.5K | 0 | -107.5K |
| ACADIAN ASSET MANAGEMENT LLC | Sold Out | 96.9K | 0 | -96.9K |
| Qube Research & Technologies Ltd | New | 0 | 92.4K | +92.4K |
| TWO SIGMA INVESTMENTS, LP | Increased | 39.1K | 102.8K | +63.7K |
| CITADEL ADVISORS LLC | Reduced | 267.2K | 207.6K | -59.6K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 390.2K | 340.1K | -50.1K |
| MORGAN STANLEY | Increased | 89.3K | 131.8K | +42.6K |
| JANE STREET GROUP, LLC | Reduced | 57.7K | 19.5K | -38.2K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | 89.3K | 53.4K | -35.9K |
| MILLENNIUM MANAGEMENT LLC | Reduced | 792.7K | 773.6K | -19.1K |
| BANK OF AMERICA CORP /DE/ | Sold Out | 17.4K | 0 | -17.4K |
| HRT FINANCIAL LP | Sold Out | 17.3K | 0 | -17.3K |
| Verdad Advisers, LP | New | 0 | 16.3K | +16.3K |
| UBS Group AG | Reduced | 101.6K | 85.6K | -16.0K |
| XTX Topco Ltd | Sold Out | 14.3K | 0 | -14.3K |
| Quadrature Capital Ltd | New | 0 | 13.0K | +13.0K |
| Jump Financial, LLC | Increased | 11.1K | 24.1K | +12.9K |
| GSA CAPITAL PARTNERS LLP | Sold Out | 11.5K | 0 | -11.5K |
| AXQ CAPITAL, LP | New | 0 | 10.4K | +10.4K |
| SG Americas Securities, LLC | New | 0 | 10.3K | +10.3K |
| GOLDMAN SACHS GROUP INC | Reduced | 21.6K | 14.5K | -7.1K |
| SIMPLEX TRADING, LLC | Sold Out | 6.6K | 0 | -6.6K |
| BlackRock, Inc. | Reduced | 524.3K | 519.3K | -5.0K |
| Tower Research Capital LLC (TRC) | Reduced | 7.0K | 4.1K | -2.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 63.6K | 61.9K | -1.7K |
| China Universal Asset Management Co., Ltd. | Reduced | 17.9K | 16.2K | -1.7K |
| BARCLAYS PLC | Increased | 5.8K | 7.3K | +1.5K |
| CITIGROUP INC | Increased | 2.8K | 4.0K | +1.2K |
| SBI Securities Co., Ltd. | New | 0 | 1.2K | +1.2K |
| Mirae Asset Global Investments Co., Ltd. | Reduced | 5.2K | 4.6K | -695 |
| ROYAL BANK OF CANADA | Increased | 860 | 1.3K | +429 |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 2.4K | 2.7K | +289 |
| WELLS FARGO & COMPANY/MN | Reduced | 1.0M | 1.0M | -243 |
| JPMORGAN CHASE & CO | Increased | 7.6K | 7.8K | +158 |
| GF FUND MANAGEMENT CO. LTD. | Reduced | 2.2K | 2.1K | -158 |
| Caitong International Asset Management Co., Ltd | Increased | 3 | 35 | +32 |
| OSAIC HOLDINGS, INC. | Reduced | 221 | 220 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.