MacroGenics
MGNX
109 hedge funds and large institutions have $125M invested in MacroGenics in 2026 Q1 according to their latest regulatory filings, with 32 funds opening new positions, 29 increasing their positions, 28 reducing their positions, and 10 closing their positions.
1,264% more call options, than puts
Call options by funds: $600K | Put options by funds: $44K
220% more first-time investments, than exits
New positions opened: 32 | Existing positions closed: 10
94% more capital invested
Capital invested by funds: $64.3M → $125M (+$60.5M)
22% more funds holding
Funds holding: 89 → 109 (+20)
4.77% more ownership
Funds ownership: 63.16% → 67.92% (+4.8%)
4% more repeat investments, than reductions
Existing positions increased: 29 | Existing positions reduced: 28
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCM
RA Capital Management
Boston,
Massachusetts
|
+$3.98M |
| 2 |
Two Sigma Investments
New York
|
+$3.26M |
| 3 |
Millennium Management
New York
|
+$1.75M |
| 4 |
Marshall Wace
London,
United Kingdom
|
+$1.58M |
| 5 |
DP
Diadema Partners
Morristown,
New Jersey
|
+$1.28M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
JFG
Jefferies Financial Group
New York
|
-$2.96M |
| 2 |
Jane Street
New York
|
-$1.38M |
| 3 |
Jacobs Levy Equity Management
Florham Park,
New Jersey
|
-$981K |
| 4 |
AC
Armistice Capital
New York
|
-$665K |
| 5 |
Universal-Beteiligungs- und Servicegesellschaft
Frankfurt Am Main,
Germany
|
-$619K |
MGNX Hedge Fund Activity: Q1 2026 in Review
109 of the 8,191 institutional investors tracked by Wall St. Rank reported a position in MacroGenics (MGNX) for Q1 2026, worth a combined $125M — up 94% from $64.3M a quarter earlier.
Buyers outnumbered sellers: 32 funds opened new MGNX positions and 10 closed out — a net gain of 22 holders — while 29 added to existing stakes and 28 trimmed.
The largest buyer was RA Capital Management, opening a new position worth an estimated $3.98M. The largest seller was Jefferies Financial Group, exiting entirely with an estimated $2.96M sold.
- 109 institutional investors held MacroGenics (MGNX) as of Q1 2026, up from 89 in Q4 2025.
- Funds reported $125M of MacroGenics stock for Q1 2026, up 94% quarter-over-quarter.
- 32 funds opened new MacroGenics positions in Q1 2026 and 10 closed out, a net change of +22 holders.
- The largest MacroGenics buyer in Q1 2026 was RA Capital Management, an estimated $3.98M added.
- The largest MacroGenics seller in Q1 2026 was Jefferies Financial Group, an estimated $2.96M sold.
Based on aggregated 13F filings for Q1 2026.