ANAPTYSBIO INC (ANAB) Institutional Ownership Changes & 13F Activity

ANAPTYSBIO INC (ANAB) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC and Viking Global Investors.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2018Renaissance Technologies LLCSell-68,10059,400$6,182
Q4 2017Renaissance Technologies LLCBuy29,700127,500$12,842
Q3 2017Renaissance Technologies LLCBuy97,80097,800$3,418

Frequently asked questions about ANAB activity

  • Which institutional owners are buying ANAB?

    Institutional owners buying ANAB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in ANAB activity?

    "Buy" means an investor increased their reported position in ANAB compared to the prior reporting period. This reflects growing exposure to ANAPTYSBIO INC (ANAB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in ANAB increasing?

    Institutional interest in ANAB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

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