MACROGENICS INC (MGNX) Stock Institutional Trading Activity


MACROGENICS INC (MGNX) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC, Muhlenkamp & Co, and First Eagle U.S. Value. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q4 2025Renaissance Technologies LLCBuy1,207,4082,908,631$4,682,896
Q3 2025Renaissance Technologies LLCBuy374,7291,701,223$2,858,055
Q2 2025Renaissance Technologies LLCBuy174,2241,326,494$1,605,058
Q1 2025Renaissance Technologies LLCBuy613,7471,152,270$1,463,383
Q4 2024Renaissance Technologies LLCBuy220,100538,523$1,750,200
Q3 2024Renaissance Technologies LLCSell-165,604318,423$1,047,612
Q2 2024Renaissance Technologies LLCSell-231,000484,027$2,057,115
Q1 2024Renaissance Technologies LLCSell-48,500715,027$10,525
Q4 2023Renaissance Technologies LLCBuy98,377763,527$7,345
Q3 2023Renaissance Technologies LLCSell-89,673665,150$3,100
Q2 2023Renaissance Technologies LLCBuy180,000754,823$4,038
Q1 2023Renaissance Technologies LLCBuy91,700574,823$4,121
Q4 2022Renaissance Technologies LLCSell-26,100483,123$3,242
Q3 2022Renaissance Technologies LLCSell-921,700509,223$1,762
Q2 2022Renaissance Technologies LLCBuy845,2111,430,923$4,221
Q1 2022Renaissance Technologies LLCBuy117,589585,712$5,160
Q1 2020Renaissance Technologies LLCBuy16,000468,123$2,724
Q4 2019Renaissance Technologies LLCBuy17,770452,123$4,919
Q3 2019Renaissance Technologies LLCBuy9,930434,353$5,542
Q2 2019Renaissance Technologies LLCSell-399,300424,423$7,202
Q1 2019Renaissance Technologies LLCBuy627,623823,723$14,811
Q4 2018Renaissance Technologies LLCBuy37,077196,100$2,490
Q3 2018Renaissance Technologies LLCSell-240,300159,023$3,409
Q1 2018Renaissance Technologies LLCBuy98,800399,323$10,047
Q4 2017Renaissance Technologies LLCBuy106,900300,523$5,710
Q4 2017Muhlenkamp & CoSell-2,23710,515$200
Q3 2017Renaissance Technologies LLCSell-33,400193,623$3,578
Q3 2017Muhlenkamp & CoSell-41512,752$236
Q2 2017Renaissance Technologies LLCBuy96,100227,023$3,975
Q2 2017Muhlenkamp & CoBuy2,65213,167$231

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.