ULTRAGENYX PHARMACEUTICAL IN (RARE) Institutional Ownership Changes & 13F Activity

ULTRAGENYX PHARMACEUTICAL IN (RARE). 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
Q1 2026Renaissance Technologies LLCBuy195,600561,700$11,767,615
Q4 2025Renaissance Technologies LLCBuy344,200366,100$8,420,300
Q3 2025Renaissance Technologies LLCSell-186,40021,900$658,752
Q2 2025Renaissance Technologies LLCSell-91,300208,300$7,573,788
Q1 2025Renaissance Technologies LLCBuy44,900299,600$10,848,516
Q4 2024Renaissance Technologies LLCBuy72,600254,700$10,715,229
Q3 2024Renaissance Technologies LLCBuy162,500182,100$10,115,655
Q2 2023Renaissance Technologies LLCSell-27,80019,600$904
Q4 2021Renaissance Technologies LLCSell-24,20047,400$3,986
Q3 2021Renaissance Technologies LLCSell-390,80071,600$6,458
Q2 2021Renaissance Technologies LLCBuy317,600462,400$44,090
Q1 2021Renaissance Technologies LLCBuy50,000144,800$16,487
Q4 2020Renaissance Technologies LLCBuy40,40094,800$13,123
Q1 2016Renaissance Technologies LLCBuy51,20054,400$3,444
Q3 2015Renaissance Technologies LLCBuy3,2003,200$308

Frequently asked questions about RARE activity

  • Which institutional owners are buying RARE?

    Institutional owners buying RARE 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 RARE activity?

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

  • Is institutional interest in RARE increasing?

    Institutional interest in RARE 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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