MACROGENICS INC (MGNX) Institutional Shareholders
MACROGENICS INC (MGNX) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $223.80M in MGNX holdings during the latest filing period.
Armistice Capital, Llc is currently the largest disclosed institutional shareholder of MGNX tracked by InsiderSet, reporting ownership valued at approximately $23.13M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $20.73M, representing an estimated loss of -10.39% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 59% of the total disclosed MGNX value among the investors covered in this analysis. Major shareholders include Armistice Capital, Llc, Blackrock, Inc., Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in MACROGENICS INC (MGNX).
This page ranks the largest institutional MGNX shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
119
Total Reported Value
$223.80M
Largest Holder
Armistice Capital, Llc
Largest Position
$23.13M
Insider Transactions (90d)
2
Latest Filing Quarter
Q2 2026
New Institutional Positions
156
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Armistice Capital, Llc | 0.64% | 5,006,752 | $23,131,194 | $20,727,953 | -$2,403,241 | -10.39% | |
| Blackrock, Inc. | 0.00% | 4,679,229 | $21,618,040 | $19,372,008 | -$2,246,032 | -10.39% | |
| Vanguard Capital Management Llc | 0.00% | 2,656,010 | $12,270,766 | $10,995,881 | -$1,274,885 | -10.39% | |
| Renaissance Technologies LLC | Jim Simons | 0.02% | 2,632,750 | $12,163,305 | $10,899,585 | -$1,263,720 | -10.39% |
| Acadian Asset Management Llc | 0.01% | 2,542,643 | $11,740,000 | $10,526,542 | -$1,213,458 | -10.34% | |
| Bank Of America Corp | 0.00% | 2,488,252 | $11,495,724 | $10,301,363 | -$1,194,361 | -10.39% | |
| Two Sigma Investments, Lp | 0.01% | 2,465,699 | $11,391,529 | $10,207,994 | -$1,183,535 | -10.39% | |
| Millennium Management Llc | 0.01% | 2,374,296 | $10,969,248 | $9,829,585 | -$1,139,663 | -10.39% | |
| Wasatch Advisors Lp | 0.06% | 2,018,881 | $9,327,230 | $8,358,167 | -$969,063 | -10.39% | |
| Ra Capital Management, L.P. | 0.07% | 1,864,176 | $8,612,493 | $7,717,689 | -$894,804 | -10.39% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,820,231 | $8,409,467 | $7,535,756 | -$873,711 | -10.39% | |
| Mackenzie Financial Corp | 0.01% | 1,642,626 | $7,588,932 | $6,800,472 | -$788,460 | -10.39% | |
| Marshall Wace, Llp | 0.01% | 1,616,220 | $7,466,936 | $6,691,151 | -$775,785 | -10.39% | |
| Geode Capital Management, Llc | 0.00% | 1,576,549 | $7,285,810 | $6,526,913 | -$758,897 | -10.42% | |
| Affinity Asset Advisors, Llc | 0.27% | 1,216,606 | $5,620,720 | $5,036,749 | -$583,971 | -10.39% | |
| D. E. Shaw & Co., Inc. | 0.00% | 1,062,991 | $4,911,018 | $4,400,783 | -$510,235 | -10.39% | |
| Jacobs Levy Equity Management, Inc | 0.02% | 1,002,274 | $4,630,506 | $4,149,414 | -$481,092 | -10.39% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 1,000,412 | $4,621,903 | $4,141,706 | -$480,197 | -10.39% | |
| State Street Corp | 0.00% | 863,663 | $3,990,123 | $3,575,565 | -$414,558 | -10.39% | |
| Goldman Sachs Group Inc | 0.00% | 558,001 | $2,577,964 | $2,310,124 | -$267,840 | -10.39% | |
| Northern Trust Corp | 0.00% | 516,129 | $2,384,516 | $2,136,774 | -$247,742 | -10.39% | |
| Vanguard Fiduciary Trust Co | 0.00% | 420,106 | $1,940,890 | $1,739,239 | -$201,651 | -10.39% | |
| Nomura Asset Management International Inc. | 0.00% | 420,000 | $1,940,000 | $1,738,800 | -$201,200 | -10.37% | |
| Walleye Capital Llc | 0.01% | 408,150 | $1,885,653 | $1,689,741 | -$195,912 | -10.39% | |
| Dimensional Fund Advisors Lp | 0.00% | 379,335 | $1,753,576 | $1,570,447 | -$183,129 | -10.44% | |
| Diadema Partners Lp | 0.61% | 374,403 | $1,729,742 | $1,550,028 | -$179,714 | -10.39% | |
| Pinnacle Associates Ltd | 0.01% | 254,301 | $1,174,871 | $1,052,806 | -$122,065 | -10.39% | |
| Panagora Asset Management Inc | 0.00% | 250,154 | $1,155,711 | $1,035,638 | -$120,073 | -10.39% | |
| Charles Schwab Investment Management Inc | 0.00% | 192,635 | $889,974 | $797,509 | -$92,465 | -10.39% | |
| Man Group Plc | 0.00% | 188,189 | $869,433 | $779,102 | -$90,331 | -10.39% | |
| Citadel Advisors Llc | 0.00% | 179,833 | $830,828 | $744,509 | -$86,319 | -10.39% | |
| Informed Momentum Co Llc | 0.07% | 171,705 | $793,277 | $710,859 | -$82,418 | -10.39% | |
| Lpl Financial Llc | 0.00% | 170,263 | $786,615 | $704,889 | -$81,726 | -10.39% | |
| Sei Investments Co | 0.00% | 164,704 | $760,932 | $681,875 | -$79,057 | -10.39% | |
| Royal Bank Of Canada | 0.00% | 147,058 | $679,000 | $608,820 | -$70,180 | -10.34% | |
| Strs Ohio | 0.00% | 142,500 | $658,350 | $589,950 | -$68,400 | -10.39% | |
| Bank Of New York Mellon Corp | 0.00% | 135,557 | $626,272 | $561,206 | -$65,066 | -10.39% | |
| Nuveen, Llc | 0.00% | 131,753 | $608,698 | $545,457 | -$63,241 | -10.39% | |
| Adar1 Capital Management, Llc | 0.03% | 129,822 | $599,778 | $537,463 | -$62,315 | -10.39% | |
| Squarepoint Ops Llc | 0.00% | 117,378 | $542,286 | $485,945 | -$56,341 | -10.39% | |
| Invesco Ltd. | 0.00% | 102,985 | $475,790 | $426,358 | -$49,432 | -10.39% | |
| Headlands Technologies Llc | 0.05% | 99,188 | $458,249 | $410,638 | -$47,611 | -10.39% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 96,686 | $446,689 | $400,280 | -$46,409 | -10.39% | |
| Persistent Asset Partners Ltd | 0.14% | 95,371 | $440,614 | $394,836 | -$45,778 | -10.39% | |
| Morgan Stanley | 0.00% | 92,788 | $428,681 | $384,142 | -$44,539 | -10.39% | |
| Jane Street Group, Llc | 0.00% | 83,862 | $387,442 | $347,189 | -$40,253 | -10.39% | |
| Fmr Llc | 0.00% | 83,618 | $386,315 | $346,179 | -$40,136 | -10.39% | |
| Xtx Topco Ltd | 0.00% | 76,059 | $351,393 | $314,884 | -$36,509 | -10.39% | |
| Ikarian Capital, Llc | 0.06% | 74,893 | $346,006 | $310,057 | -$35,949 | -10.39% | |
| Bridgeway Capital Management, Llc | 0.01% | 73,500 | $339,570 | $304,290 | -$35,280 | -10.39% |
Frequently asked questions about MGNX
Who owns the most MGNX stock?
The largest holders of MGNX are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MACROGENICS INC (MGNX).
Is MGNX widely held by superinvestors?
Many widely followed stocks like MGNX appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MGNX is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.