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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- MACROGENICS INC (MGNX) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2017 | Renaissance Technologies LLC | Buy | 110,200 | 130,923 | $2,435 |
| Q1 2017 | Muhlenkamp & Co | Sell | -2,288 | 10,515 | $196 |
| Q4 2016 | First Eagle U.S. Value | Sell | -46,800 | 175,000 | $3,577 |
| Q4 2016 | Muhlenkamp & Co | Buy | 641 | 12,803 | $262 |
| Q3 2016 | Muhlenkamp & Co | Sell | -3,673 | 12,162 | $364 |
| Q2 2016 | First Eagle U.S. Value | Sell | -64,000 | 221,800 | $5,986 |
| Q2 2016 | Muhlenkamp & Co | Sell | -51,410 | 15,835 | $427 |
| Q1 2016 | Renaissance Technologies LLC | Sell | -71,941 | 20,723 | $389 |
| Q1 2016 | First Eagle U.S. Value | Sell | -4,200 | 285,800 | $5,359 |
| Q1 2016 | Muhlenkamp & Co | Buy | 835 | 67,245 | $1,261 |
| Q4 2015 | Renaissance Technologies LLC | Buy | 66,440 | 92,664 | $2,870 |
| Q4 2015 | First Eagle U.S. Value | Sell | -113,181 | 290,000 | $8,981 |
| Q4 2015 | Muhlenkamp & Co | Sell | -90 | 66,410 | $2,057 |
| Q3 2015 | Renaissance Technologies LLC | Buy | 26,224 | 26,224 | $562 |
| Q3 2015 | First Eagle U.S. Value | Buy | 10,000 | 403,181 | $8,636 |
| Q2 2015 | Muhlenkamp & Co | Buy | 95 | 66,500 | $2,525 |
| Q1 2015 | First Eagle U.S. Value | Buy | 53,896 | 393,181 | $12,334 |
| Q1 2015 | Muhlenkamp & Co | Buy | 49,680 | 66,405 | $2,083 |
| Q4 2014 | First Eagle U.S. Value | Buy | 5,000 | 339,285 | $11,899 |
| Q4 2014 | Muhlenkamp & Co | Sell | -250 | 16,725 | $587 |
| Q3 2014 | Muhlenkamp & Co | Buy | 16,975 | 16,975 | $355 |
| Q2 2014 | First Eagle U.S. Value | Buy | 334,285 | 334,285 | $7,264 |
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.