AC Immune SA
ACIU · NASDAQ
$2.49+$0.055 (+2.26%)TodayMarket closed ·
Prev close $2.44
Who owns ACIU
Largest institutional holders, from their latest 13F filings
The 10 largest institutions hold 60.7% of ACIU’s shares.
- BVF Partners L.P.19.5%
- DH Capital GmbH & Co. KG16.0%
- Varuma AG11.8%
- Affiris AG6.3%
- Next 6 largest institutions7.1%
- All other shareholders39.3%
| Holder | Shares | % of shares |
|---|---|---|
| BVF Partners L.P. | 19.82M | 19.48% |
| DH Capital GmbH & Co. KG | 16.32M | 16.03% |
| Varuma AG | 12.00M | 11.79% |
| Affiris AG | 6.43M | 6.32% |
| Pfeifer (Andrea) | 3.41M | 3.35% |
| Wells Fargo Advisors | 1.00M | 0.99% |
| Renaissance Technologies LLC | 840.13K | 0.83% |
| Millennium Management LLC | 773.59K | 0.76% |
| Platinum Asset Management | 717.07K | 0.70% |
| BlackRock Institutional Trust Company, N.A. | 445.20K | 0.44% |
Largest mutual fund holders
| Holder | Shares | % of shares |
|---|---|---|
| iShares Biotechnology ETF | 453.71K | 0.45% |
| Monega ARIAD Innovation | 92.36K | 0.09% |
| DFA Dimensional US Small Cap ETF | 80.74K | 0.08% |
| iShares NASDAQ US Biotechnology UCITS ETF | 79.86K | 0.08% |
| Fidelity NASDAQ Composite Index Fund | 69.85K | 0.07% |
Insider trades
Form 4 filings by officers, directors and large holders
Over the last 6 months, insiders sold $27.93K (1 trade) of ACIU on the open market, with no buys.
| Insider | Type | Shares | Value |
|---|---|---|---|
| Twyman Roy Ervin | Award | 38.89K | — |
| Twyman Roy Ervin | Award | 16.57K | — |
| Buetler Monika | Award | 41.67K | — |
| Buetler Monika | Award | 17.75K | — |
| June Carl Howard | Award | 38.89K | — |
| June Carl Howard | Award | 16.57K | — |
| AGUIAR-LUCANDER RENEE | Award | 38.89K | — |
| AGUIAR-LUCANDER RENEE | Award | 16.57K | — |
| Zuegel Martin | Award | 77.78K | — |
| Zuegel Martin | Award | 33.14K | — |
Short interest
Settled Sep 30, 2026
- Shares short
- 3.52M
- Days to cover
- 18.74
- % of shares outstanding
- 3.46%
- Average daily volume
- 188.12K
- Change since last report
- +1.4%
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