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$55.30MInstitution
Andrea Pfeifer3.77%3,834,288$10.70MInsider
Wells Fargo Company0.99%1,004,284$2.80MInstitution
Millennium Management LLC0.78%792,657$2.21MInstitution
Renaissance Technologies LLC0.61%624,367$1.74MInstitution
Blackrock Inc0.52%524,278$1.46MInstitution
Arrowstreet Capital Limited Partnership0.40%405,658$1.13MInstitution
Dimensional Fund Advisors LP0.38%390,165$1.09MInstitution
Northern Trust Corp0.27%278,513$777.05kInstitution
Citadel Advisors LLC0.26%267,233$745.58kInstitution

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ACIU vs Biotech Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
ACIU24.63%4.31%Net SellingNet Selling
ARMP4.55%95.45%Net SellingNet Selling
CLLS14.18%0.00%
MGNX62.76%37.24%Net Buying
ELDN52.81%39.50%

Ac Immune Sa Stock Ownership FAQ

Who owns Ac Immune Sa?

Ac Immune Sa (NASDAQ: ACIU) is owned by 24.63% institutional shareholders, 4.31% Ac Immune Sa insiders, and 71.06% 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 $10.62M.

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