XOMA (XOMA) Institutional Ownership Changes & 13F Activity

XOMA. Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings. This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Renaissance Technologies LLC.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy10,11739,017$1,037,462
Q3 2025Renaissance Technologies LLCBuy17,00028,900$1,113,806
Q2 2025Renaissance Technologies LLCSell-1,80011,900$299,880
Q1 2025Renaissance Technologies LLCSell-2,40013,700$273,041
Q4 2024Renaissance Technologies LLCBuy7,61916,100$423,108
Q3 2024Renaissance Technologies LLCSell-3,8158,481$224,577
Q4 2023Renaissance Technologies LLCSell-5,90912,296$227
Q3 2023Renaissance Technologies LLCSell-28,89518,205$257
Q2 2023Renaissance Technologies LLCBuy35,49947,100$890
Q1 2023Renaissance Technologies LLCSell-21,19911,601$245
Q2 2022Renaissance Technologies LLCBuy26,53532,800$731
Q4 2020Renaissance Technologies LLCSell-25,4356,265$276
Q3 2020Renaissance Technologies LLCSell-55,66931,700$597
Q2 2020Renaissance Technologies LLCSell-20,21787,369$1,726
Q1 2020Renaissance Technologies LLCBuy17,853107,586$2,189
Q4 2019Renaissance Technologies LLCBuy79,03389,733$2,450
Q2 2019Renaissance Technologies LLCSell-29,18910,700$159
Q1 2018Renaissance Technologies LLCBuy39,88939,889$807

Frequently asked questions about XOMA activity

  • Which institutional owners are buying XOMA?

    Institutional owners buying XOMA 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 XOMA activity?

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

  • Is institutional interest in XOMA increasing?

    Institutional interest in XOMA 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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