BOUNDLESS BIO INC (BOLD) Institutional Ownership Changes & 13F Activity

BOUNDLESS BIO INC (BOLD). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Arch Venture Management, Llc, Tang Capital Management Llc, Adar1 Capital Management, Llc, Citadel Advisors Llc, and Cormorant Asset Management, Lp.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Arch Venture Management, LlcBuy+2,694,0952,694,095$6.74MQ2 2026Aug 14, 2026
Tang Capital Management LlcBuy+2,559,8752,559,875$6.40MQ2 2026Aug 14, 2026
Adar1 Capital Management, LlcBuy+1,968,2161,968,216$4.92MQ2 2026Aug 14, 2026
Citadel Advisors LlcSell-1,197,082-89.2%145,049$362.62KQ2 2026Aug 14, 2026
Cormorant Asset Management, LpBuy+1,000,0001,000,000$2.50MQ2 2026Aug 14, 2026
Stonepine Capital Management, LlcSell-443,087-74.1%154,595$386.49KQ2 2026Aug 14, 2026
Millennium Management LlcBuy+378,764+379.2%478,639$1.20MQ2 2026Aug 14, 2026
Hrt Financial LpBuy+116,288116,288$290.00KQ2 2026Aug 14, 2026
Prelude Capital Management, LlcBuy+83,99883,998$210.00KQ2 2026Aug 14, 2026
Bridgeway Capital Management, LlcBuy+77,500+153.5%128,000$320.00KQ2 2026Aug 14, 2026
Rangeley Capital, LlcBuy+74,00074,000$185.00KQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+64,32364,323$160.81KQ2 2026Aug 14, 2026
Superstring Capital Management LpBuy+55,35655,356$138.39KQ2 2026Aug 14, 2026
Ensign Peak Advisors, IncSell-27,665-14.8%159,835$399.59KQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+2,715+15.5%20,207$50.52KQ2 2026Aug 14, 2026
Xtx Topco LtdSell-1,310-3.8%33,361$83.40KQ2 2026Aug 14, 2026
Affinity Asset Advisors, LlcBuy+250,000250,000$625.00KQ2 2026Aug 13, 2026
Acadian Asset Management LlcBuy+134,147+1063.8%146,757$365.00KQ2 2026Aug 13, 2026
Fmr LlcSell-114,400-4.2%2,581,055$6.45MQ2 2026Aug 13, 2026
Renaissance Technologies LLCBuy+72,570+18.2%471,570$1.18MQ2 2026Aug 13, 2026
Northern Trust CorpBuy+34,82434,824$87.06KQ2 2026Aug 13, 2026
Vanguard Capital Management LlcBuy+17,731+3.0%614,923$1.54MQ2 2026Aug 13, 2026
Bnp Paribas Financial MarketsSell-2-1.1%176$440.00Q2 2026Aug 13, 2026
Geode Capital Management, LlcSell-10,840-8.5%116,736$291.84KQ2 2026Aug 12, 2026
Jpmorgan Chase & CoBuy+179179$439.00Q2 2026Aug 12, 2026
Tower Research Capital Llc (Trc)Sell-2,023-85.3%348$870.00Q2 2026Aug 11, 2026
Mercer Global Advisors IncBuy+5050$125.00Q2 2026Aug 11, 2026
Blackrock, Inc.Buy+17,820+25.2%88,495$221.24KQ2 2026Aug 07, 2026
Gsa Capital Partners LlpSell-24,471-25.3%72,353$181.00KQ2 2026Aug 06, 2026
Caitong International Asset Management Co., LtdBuy+10,440+348000.0%10,443$26.11KQ2 2026Aug 05, 2026
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Frequently asked questions about BOLD activity

  • Which institutional owners are buying BOLD?

    Institutional owners buying BOLD 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 BOLD activity?

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

  • Is institutional interest in BOLD increasing?

    Institutional interest in BOLD 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.