NASDAQ: ACIU
Ac Immune Sa Stock Ownership - Who owns Ac Immune Sa?

Insider buying vs selling

Have Ac Immune Sa insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Andrea PfeiferChief Executive Officer2026-05-1510,000$2.79
$27.93kSell
Andrea PfeiferChief Executive Officer2026-04-1510,000$3.14
$31.43kBuy
Andrea PfeiferChief Executive Officer2026-04-1510,000$3.14
$31.43kSell

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Net Insider Buy/Sell (L12M) Ownership

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ACIU Shareholders

What type of owners hold Ac Immune Sa stock?

Institutional
Insider
Retail
NameHoldSharesValueType
Bvf Inc19.48%19,822,436$55.90MInstitution
Andrea Pfeifer3.77%3,834,288$10.81MInsider
Wells Fargo Company0.99%1,004,284$2.83MInstitution
Millennium Management LLC0.78%792,657$2.24MInstitution
Renaissance Technologies LLC0.61%624,367$1.76MInstitution
Blackrock Inc0.52%524,278$1.48MInstitution
Arrowstreet Capital Limited Partnership0.40%405,658$1.14MInstitution
Dimensional Fund Advisors LP0.38%390,165$1.10MInstitution
Northern Trust Corp0.27%278,513$785.41kInstitution
Citadel Advisors LLC0.26%267,233$753.60kInstitution

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ACIU vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ACIU24.65%4.31%Net SellingNet Selling
SLN14.05%0.09%
ELDN55.20%39.50%
ARMP4.57%95.43%Net SellingNet Selling
NAGE20.68%79.32%Net BuyingNet Buying

Ac Immune Sa Stock Ownership FAQ

Who owns Ac Immune Sa?

Ac Immune Sa (NASDAQ: ACIU) is owned by 24.65% institutional shareholders, 4.31% Ac Immune Sa insiders, and 71.04% retail investors. Andrea Pfeifer is the largest individual Ac Immune Sa shareholder, owning 3.83M shares representing 3.77% of the company. Andrea Pfeifer's Ac Immune Sa shares are currently valued at $11.08M.

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