TECTONIC THERAPEUTIC INC (TECX) Institutional Ownership Changes & 13F Activity

TECTONIC THERAPEUTIC INC (TECX). 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 Braidwell Lp, First Light Asset Management, Llc, Ameriprise Financial Inc, Price T Rowe Associates Inc, and Millennium Management Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Manufacturers Life Insurance Company, TheSell-7,933-57.0%5,996$206.11KQ2 2026Sep 09, 2026
Citadel Advisors LlcBuy+90,39390,393$3.11MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemSell-454-76.3%141$4.85KQ2 2026Aug 24, 2026
Braidwell LpSell-250,251-29.5%596,900$20.52MQ2 2026Aug 14, 2026
First Light Asset Management, LlcBuy+152,983+23.6%800,726$27.52MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+142,448142,448$4.90MQ2 2026Aug 14, 2026
Price T Rowe Associates IncSell-116,054-70.7%48,001$1.65MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+107,177+183.7%165,525$5.69MQ2 2026Aug 14, 2026
Vestal Point Capital, LpBuy+97,000+29.6%425,000$14.61MQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Buy+70,430+60.7%186,550$6.41MQ2 2026Aug 14, 2026
Jane Street Group, LlcBuy+65,82165,821$2.26MQ2 2026Aug 14, 2026
Sectoral Asset Management IncBuy+51,950+272.6%71,009$2.44MQ2 2026Aug 14, 2026
Exoduspoint Capital Management, LpSell-48,440-57.9%35,239$1.21MQ2 2026Aug 14, 2026
Ikarian Capital, LlcBuy+48,300+30.7%205,837$7.08MQ2 2026Aug 14, 2026
Hrt Financial LpBuy+44,54044,540$1.53MQ2 2026Aug 14, 2026
Prosight Management, LpSell-40,141-50.3%39,731$1.37MQ2 2026Aug 14, 2026
Trexquant Investment LpBuy+36,99136,991$1.27MQ2 2026Aug 14, 2026
Sei Investments CoSell-19,841-53.8%17,029$585.37KQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-19,391-11.8%145,028$4.99MQ2 2026Aug 14, 2026
Boothbay Fund Management, LlcBuy+14,634+31.7%60,771$2.09MQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+11,498+18.4%73,924$2.54MQ2 2026Aug 14, 2026
Aqr Capital Management LlcSell-10,317-60.9%6,617$227.46KQ2 2026Aug 14, 2026
Brevan Howard Capital Management LpBuy+9,5739,573$329.07KQ2 2026Aug 14, 2026
Raymond James Financial IncBuy+8,478+13.2%72,674$2.50MQ2 2026Aug 14, 2026
Alliancebernstein L.P.Buy+7,4607,460$230.59KQ2 2026Aug 14, 2026
Invesco Ltd.Buy+6,3886,388$219.59KQ2 2026Aug 14, 2026
Rangeley Capital, LlcBuy+6,0006,000$206.25KQ2 2026Aug 14, 2026
Velan Capital Investment Management LpBuy+6,0006,000$206.25KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+4,764+4.2%117,428$4.04MQ2 2026Aug 14, 2026
Kennedy Capital Management LlcSell-4,480-1.6%282,202$9.70MQ2 2026Aug 14, 2026
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Frequently asked questions about TECX activity

  • Which institutional owners are buying TECX?

    Institutional owners buying TECX 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 TECX activity?

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

  • Is institutional interest in TECX increasing?

    Institutional interest in TECX 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.