MACROGENICS INC (MGNX) Institutional Ownership Changes & 13F Activity

MACROGENICS INC (MGNX). 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 Armistice Capital, Llc, Citadel Advisors Llc, State Street Corp, Jacobs Levy Equity Management, Inc, and Jane Street Group, Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
State Street CorpBuy+569,976+194.1%863,663$3.99MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+17,681—17,681$81.69KQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-602,785-77.0%179,833$830.83KQ2 2026Sep 02, 2026
Corient Private Wealth LlcSell-1,820-5.7%30,000$138.60KQ2 2026Aug 27, 2026
California State Teachers Retirement SystemBuy+865—865$4.00KQ2 2026Aug 24, 2026
Armistice Capital, LlcSell-1,005,248-16.7%5,006,752$23.13MQ2 2026Aug 14, 2026
Jacobs Levy Equity Management, IncBuy+561,131+127.2%1,002,274$4.63MQ2 2026Aug 14, 2026
Jane Street Group, LlcSell-524,647-86.2%83,862$387.44KQ2 2026Aug 14, 2026
Millennium Management LlcSell-420,061-15.0%2,374,296$10.97MQ2 2026Aug 14, 2026
Susquehanna International Group, LlpSell-398,608-88.1%53,619$247.72KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+284,523+104.0%558,001$2.58MQ2 2026Aug 14, 2026
Diadema Partners LpSell-225,597-37.6%374,403$1.73MQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+152,584+381.0%192,635$889.97KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+146,968+163297.8%147,058$679.00KQ2 2026Aug 14, 2026
Man Group PlcBuy+140,177+292.0%188,189$869.43KQ2 2026Aug 14, 2026
Sei Investments CoBuy+133,386+425.9%164,704$760.93KQ2 2026Aug 14, 2026
Invesco Ltd.Buy+102,985—102,985$475.79KQ2 2026Aug 14, 2026
Xtx Topco LtdSell-101,766-57.2%76,059$351.39KQ2 2026Aug 14, 2026
Adar1 Capital Management, LlcBuy+89,822+224.6%129,822$599.78KQ2 2026Aug 14, 2026
Bank Of America CorpBuy+86,438+3.6%2,488,252$11.50MQ2 2026Aug 14, 2026
Susquehanna Portfolio Strategies, LlcBuy+78,304+426.0%96,686$446.69KQ2 2026Aug 14, 2026
Canada Pension Plan Investment BoardSell-69,400-65.2%37,000$170.94KQ2 2026Aug 14, 2026
Squarepoint Ops LlcSell-66,469-36.2%117,378$542.29KQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-62,130-2.5%2,465,699$11.39MQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+56,686+1889.5%59,686$275.75KQ2 2026Aug 14, 2026
Price T Rowe Associates IncBuy+51,560—51,560$239.00KQ2 2026Aug 14, 2026
Marex Group PlcSell-50,000-50.0%50,000$231.00KQ2 2026Aug 14, 2026
Wellington Management Group LlpBuy+44,200—44,200$204.20KQ2 2026Aug 14, 2026
Metlife Investment Management, LlcBuy+37,344—37,344$172.53KQ2 2026Aug 14, 2026
Dz Bank Ag Deutsche Zentral Genossenschafts Bank, Frankfurt Am MainBuy+36,467—36,467$168.48KQ2 2026Aug 14, 2026
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Frequently asked questions about MGNX activity

  • Which institutional owners are buying MGNX?

    Institutional owners buying MGNX 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 MGNX activity?

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

  • Is institutional interest in MGNX increasing?

    Institutional interest in MGNX 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.