MGNX Institutional Ownership & Shareholders
MACROGENICS INC (MGNX) is currently held by 125 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $220.84M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
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 $11.67M, representing an estimated loss of -49.57% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 60% 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
125
Total Reported Value
$220.84M
Largest Holder
Armistice Capital, Llc
Largest Position
$23.13M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
161
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 | $11,665,732 | -$11,465,462 | -49.57% | |
| Blackrock, Inc. | 0.00% | 4,679,229 | $21,618,040 | $10,902,604 | -$10,715,436 | -49.57% | |
| Vanguard Capital Management Llc | 0.00% | 2,656,010 | $12,270,766 | $6,188,503 | -$6,082,263 | -49.57% | |
| Renaissance Technologies LLC | Jim Simons | 0.02% | 2,632,750 | $12,163,305 | $6,134,308 | -$6,028,998 | -49.57% |
| Acadian Asset Management Llc | 0.01% | 2,542,643 | $11,740,000 | $5,924,358 | -$5,815,642 | -49.54% | |
| Bank Of America Corp | 0.00% | 2,488,252 | $11,495,724 | $5,797,627 | -$5,698,097 | -49.57% | |
| Two Sigma Investments, Lp | 0.01% | 2,465,699 | $11,391,529 | $5,745,079 | -$5,646,450 | -49.57% | |
| Millennium Management Llc | 0.01% | 2,374,296 | $10,969,248 | $5,532,110 | -$5,437,138 | -49.57% | |
| Ra Capital Management, L.P. | 0.07% | 1,864,176 | $8,612,493 | $4,343,530 | -$4,268,963 | -49.57% | |
| Vanguard Portfolio Management Llc | 0.00% | 1,820,231 | $8,409,467 | $4,241,138 | -$4,168,329 | -49.57% | |
| Mackenzie Financial Corp | 0.01% | 2,013,592 | $7,772,465 | $4,691,669 | -$3,080,796 | -39.64% | |
| Marshall Wace, Llp | 0.01% | 1,616,220 | $7,466,936 | $3,765,793 | -$3,701,143 | -49.57% | |
| Geode Capital Management, Llc | 0.00% | 1,576,549 | $7,285,810 | $3,673,359 | -$3,612,451 | -49.58% | |
| Affinity Asset Advisors, Llc | 0.27% | 1,216,606 | $5,620,720 | $2,834,692 | -$2,786,028 | -49.57% | |
| D. E. Shaw & Co., Inc. | 0.00% | 1,062,991 | $4,911,018 | $2,476,769 | -$2,434,249 | -49.57% | |
| Wasatch Advisors Lp | 0.04% | 1,260,901 | $4,867,078 | $2,937,899 | -$1,929,179 | -39.64% | |
| Jacobs Levy Equity Management, Inc | 0.02% | 1,002,274 | $4,630,506 | $2,335,298 | -$2,295,208 | -49.57% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.01% | 1,000,412 | $4,621,903 | $2,330,960 | -$2,290,943 | -49.57% | |
| State Street Corp | 0.00% | 863,663 | $3,990,123 | $2,012,335 | -$1,977,788 | -49.57% | |
| Goldman Sachs Group Inc | 0.00% | 558,001 | $2,577,964 | $1,300,142 | -$1,277,822 | -49.57% | |
| Pinnacle Associates Ltd | 0.03% | 647,713 | $2,500,172 | $1,509,171 | -$991,001 | -39.64% | |
| Northern Trust Corp | 0.00% | 516,129 | $2,384,516 | $1,202,581 | -$1,181,935 | -49.57% | |
| Vanguard Fiduciary Trust Co | 0.00% | 420,106 | $1,940,890 | $978,847 | -$962,043 | -49.57% | |
| Nomura Asset Management International Inc. | 0.00% | 420,000 | $1,940,000 | $978,600 | -$961,400 | -49.56% | |
| Walleye Capital Llc | 0.01% | 408,150 | $1,885,653 | $950,990 | -$934,664 | -49.57% | |
| Dimensional Fund Advisors Lp | 0.00% | 379,335 | $1,753,576 | $883,851 | -$869,725 | -49.60% | |
| Diadema Partners Lp | 0.61% | 374,403 | $1,729,742 | $872,359 | -$857,383 | -49.57% | |
| Panagora Asset Management Inc | 0.00% | 250,154 | $1,155,711 | $582,859 | -$572,852 | -49.57% | |
| Charles Schwab Investment Management Inc | 0.00% | 192,635 | $889,974 | $448,840 | -$441,134 | -49.57% | |
| Man Group Plc | 0.00% | 188,189 | $869,433 | $438,480 | -$430,953 | -49.57% | |
| Citadel Advisors Llc | 0.00% | 179,833 | $830,828 | $419,011 | -$411,817 | -49.57% | |
| Informed Momentum Co Llc | 0.07% | 171,705 | $793,277 | $400,073 | -$393,204 | -49.57% | |
| Lpl Financial Llc | 0.00% | 170,263 | $786,615 | $396,713 | -$389,902 | -49.57% | |
| Sei Investments Co | 0.00% | 164,704 | $760,932 | $383,760 | -$377,172 | -49.57% | |
| Strs Ohio | 0.00% | 178,400 | $688,624 | $415,672 | -$272,952 | -39.64% | |
| Royal Bank Of Canada | 0.00% | 147,058 | $679,000 | $342,645 | -$336,355 | -49.54% | |
| Bank Of New York Mellon Corp | 0.00% | 135,557 | $626,272 | $315,848 | -$310,424 | -49.57% | |
| Nuveen, Llc | 0.00% | 131,753 | $608,698 | $306,984 | -$301,714 | -49.57% | |
| Adar1 Capital Management, Llc | 0.03% | 129,822 | $599,778 | $302,485 | -$297,293 | -49.57% | |
| Squarepoint Ops Llc | 0.00% | 117,378 | $542,286 | $273,491 | -$268,795 | -49.57% | |
| Invesco Ltd. | 0.00% | 102,985 | $475,790 | $239,955 | -$235,835 | -49.57% | |
| Headlands Technologies Llc | 0.05% | 99,188 | $458,249 | $231,108 | -$227,141 | -49.57% | |
| Susquehanna Portfolio Strategies, Llc | 0.01% | 96,686 | $446,689 | $225,278 | -$221,411 | -49.57% | |
| Persistent Asset Partners Ltd | 0.14% | 95,371 | $440,614 | $222,214 | -$218,400 | -49.57% | |
| Morgan Stanley | 0.00% | 92,788 | $428,681 | $216,196 | -$212,485 | -49.57% | |
| Jane Street Group, Llc | 0.00% | 83,862 | $387,442 | $195,398 | -$192,044 | -49.57% | |
| Fmr Llc | 0.00% | 83,618 | $386,315 | $194,830 | -$191,485 | -49.57% | |
| Xtx Topco Ltd | 0.00% | 76,059 | $351,393 | $177,217 | -$174,176 | -49.57% | |
| Ikarian Capital, Llc | 0.06% | 74,893 | $346,006 | $174,501 | -$171,505 | -49.57% | |
| Bridgeway Capital Management, Llc | 0.01% | 73,500 | $339,570 | $171,255 | -$168,315 | -49.57% |
Frequently asked questions about MGNX
Who are the largest institutional holders of MGNX?
The largest institutional holders of MGNX reported in the latest SEC Form 13F filings include Armistice Capital, Llc, Blackrock, Inc., Vanguard Capital Management Llc, Renaissance Technologies LLC, and Acadian Asset Management Llc. InsiderSet ranks institutional holders by their latest reported MGNX position.
What is MGNX institutional ownership?
This page tracks MGNX positions reported by institutional investment managers through SEC Form 13F. MACROGENICS INC (MGNX) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own MGNX?
InsiderSet currently tracks 125 institutional managers reporting MGNX holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of MGNX shareholders.
How much MGNX stock do institutions own?
Institutional investment managers disclosed approximately $220.84M in MGNX holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was MGNX institutional ownership last updated?
The latest MGNX institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional MGNX holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its MGNX position after the reporting date.
Are institutions buying or selling MGNX?
Institutional buying and selling can be analyzed by comparing MGNX positions across consecutive 13F reporting periods. InsiderSet's MGNX Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View MGNX ownership changes.
How has MGNX institutional ownership changed over time?
InsiderSet tracks MGNX institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.