Macrogenics (MGNX)
Macrogenics on one page: short interest, daily short volume, fails to deliver, large holders, 13F holders, earnings dates and insider trades. Listed on Nasdaq, classified by the SEC as pharmaceutical preparations.
5.1M
Short interest
settlement 2026-10-15
8.2
Days to cover
-2.7 days vs prior
54.0%
Short share of volume
2026-11-02
172
Fails to deliver
settlement 2026-10-13
Wed 11 Nov
Next earnings
estimated date
-$129K
Insider flow, 90 days
0 buys, 1 sells
As of 2026-11-02.
Short interest
FINRA, twice a month. The newest 48 settlements in the table, 48 in the chart. JSONAs of 15 October 2026, short interest in MGNX is 5,060,376 shares, down 1,972,052 shares over the last month. Over the last 48 readings it ranged from 2,928,196 shares (15 April 2026) to 7,338,558 shares (31 July 2026). At the reported average volume of 619K shares a day that is 8.2 days to cover.
Embed this chart.The embed keeps its attribution line.
<iframe src="https://xoomar.com/embed/stocks/mgnx" width="100%" height="440" style="border:0;max-width:100%" loading="lazy" title="XOOMAR chart"></iframe>
| Settlement | Shares short | Change | Avg daily volume | Days to cover |
|---|---|---|---|---|
| 2026-10-15 | 5,060,376 | -28.1% | 618,639 | 8.18 |
| 2026-09-30 | 7,039,348 | +0.1% | 645,909 | 10.90 |
| 2026-09-15 | 7,032,428 | -1.3% | 447,176 | 15.73 |
| 2026-08-31 | 7,124,937 | -1.8% | 413,111 | 17.25 |
| 2026-08-14 | 7,256,491 | -1.1% | 602,630 | 12.04 |
| 2026-07-31 | 7,338,558 | +28.9% | 786,497 | 9.33 |
| 2026-07-15 | 5,690,928 | -14.1% | 836,663 | 6.80 |
| 2026-06-30 | 6,626,533 | +38.3% | 1,918,736 | 3.45 |
| 2026-06-15 | 4,790,544 | -3.8% | 562,075 | 8.52 |
| 2026-05-29 | 4,977,397 | +2.1% | 951,721 | 5.23 |
| 2026-05-15 | 4,877,009 | +66.4% | 1,961,021 | 2.49 |
| 2026-04-30 | 2,930,168 | +0.1% | 530,864 | 5.52 |
| 2026-04-15 | 2,928,196 | -22.5% | 979,052 | 2.99 |
| 2026-03-31 | 3,778,755 | -4.9% | 810,543 | 4.66 |
| 2026-03-13 | 3,975,110 | -2.7% | 2,535,512 | 1.57 |
| 2026-02-27 | 4,086,628 | -3.3% | 495,009 | 8.26 |
| 2026-02-13 | 4,224,297 | +1.7% | 567,843 | 7.44 |
| 2026-01-30 | 4,153,716 | +2.7% | 1,106,490 | 3.75 |
| 2026-01-15 | 4,043,673 | +3.5% | 945,154 | 4.28 |
| 2025-12-31 | 3,906,299 | +1.4% | 2,326,865 | 1.68 |
| 2025-12-15 | 3,851,323 | +6.7% | 1,740,260 | 2.21 |
| 2025-11-28 | 3,607,974 | +1.3% | 776,434 | 4.65 |
| 2025-11-14 | 3,563,452 | -0.0% | 916,413 | 3.89 |
| 2025-10-31 | 3,563,867 | +0.2% | 1,028,318 | 3.47 |
| 2025-10-15 | 3,557,143 | +0.6% | 523,794 | 6.79 |
| 2025-09-30 | 3,535,046 | -5.2% | 641,067 | 5.51 |
| 2025-09-15 | 3,730,266 | -0.9% | 1,190,219 | 3.13 |
| 2025-08-29 | 3,763,348 | -3.5% | 755,698 | 4.98 |
| 2025-08-15 | 3,898,750 | -3.6% | 468,813 | 8.32 |
| 2025-07-31 | 4,044,082 | -0.8% | 754,587 | 5.36 |
| 2025-07-15 | 4,075,313 | -9.9% | 797,183 | 5.11 |
| 2025-06-30 | 4,522,294 | -18.3% | 1,634,536 | 2.77 |
| 2025-06-13 | 5,534,792 | -9.6% | 3,532,771 | 1.57 |
| 2025-05-30 | 6,121,094 | +0.5% | 332,514 | 18.41 |
| 2025-05-15 | 6,093,652 | +7.3% | 423,749 | 14.38 |
| 2025-04-30 | 5,678,775 | +6.4% | 730,638 | 7.77 |
| 2025-04-15 | 5,338,147 | -5.0% | 1,013,640 | 5.27 |
| 2025-03-31 | 5,619,678 | +13.0% | 946,762 | 5.94 |
| 2025-03-14 | 4,972,906 | -2.7% | 480,805 | 10.34 |
| 2025-02-28 | 5,109,250 | -7.5% | 640,124 | 7.98 |
| 2025-02-14 | 5,523,754 | +1.6% | 735,042 | 7.51 |
| 2025-01-31 | 5,435,015 | +3.0% | 711,105 | 7.64 |
| 2025-01-15 | 5,277,634 | +1.8% | 499,098 | 10.57 |
| 2024-12-31 | 5,184,674 | -4.0% | 462,189 | 11.22 |
| 2024-12-13 | 5,400,499 | +3.6% | 485,565 | 11.12 |
| 2024-11-29 | 5,214,021 | +2.3% | 483,082 | 10.79 |
| 2024-11-15 | 5,095,103 | -6.6% | 862,727 | 5.91 |
| 2024-10-31 | 5,457,556 | +1.7% | 519,795 | 10.50 |
Daily short volume
FINRA Reg SHO, the last 30 sessions. JSONAs of 2 November 2026, the short share of MGNX volume is 54.0%, up 8.4 points over the last five sessions. Over the last 30 readings it ranged from 30.1% (22 September 2026) to 66.5% (5 October 2026). The latest reading is 8.8 points above the 30-session average of 45.2%, on 281K shares reported.
| Date | Short volume | Total volume | Short share | Exempt |
|---|---|---|---|---|
| 2026-11-02 | 152K | 281K | 54.0% | 1 |
| 2026-10-30 | 239K | 527K | 45.3% | 0 |
| 2026-10-29 | 110K | 275K | 40.1% | 0 |
| 2026-10-28 | 280K | 537K | 52.1% | 0 |
| 2026-10-27 | 485K | 1.1M | 43.4% | 30,375 |
| 2026-10-26 | 530K | 1.2M | 45.6% | 26,922 |
| 2026-10-23 | 836K | 1.7M | 49.0% | 53,027 |
| 2026-10-22 | 72K | 155K | 46.7% | 0 |
| 2026-10-21 | 44K | 131K | 33.8% | 800 |
| 2026-10-20 | 58K | 93K | 62.0% | 667 |
| 2026-10-19 | 109K | 233K | 47.0% | 0 |
| 2026-10-16 | 95K | 150K | 63.3% | 36 |
| 2026-10-15 | 99K | 227K | 43.4% | 0 |
| 2026-10-14 | 183K | 305K | 60.0% | 0 |
| 2026-10-13 | 60K | 194K | 30.9% | 0 |
| 2026-10-12 | 31K | 63K | 48.8% | 0 |
| 2026-10-09 | 72K | 137K | 52.6% | 0 |
| 2026-10-08 | 75K | 241K | 31.2% | 0 |
| 2026-10-07 | 49K | 127K | 38.5% | 0 |
| 2026-10-06 | 82K | 197K | 41.8% | 0 |
| 2026-10-05 | 119K | 179K | 66.5% | 232 |
| 2026-10-02 | 124K | 325K | 38.3% | 800 |
| 2026-10-01 | 66K | 212K | 30.9% | 101 |
| 2026-09-30 | 60K | 198K | 30.3% | 0 |
| 2026-09-29 | 59K | 172K | 34.4% | 0 |
| 2026-09-28 | 105K | 284K | 37.1% | 0 |
| 2026-09-25 | 88K | 208K | 42.4% | 0 |
| 2026-09-24 | 89K | 147K | 60.4% | 5,122 |
| 2026-09-23 | 107K | 188K | 56.9% | 0 |
| 2026-09-22 | 35K | 116K | 30.1% | 0 |
Fails to deliver
SEC, the last 30 settlement dates with a fail. JSONAs of 13 October 2026, the fails-to-deliver balance in MGNX is 172 shares, up 23 shares over the last settlement date. Over the last 30 readings it ranged from 2 shares (11 August 2026) to 25,566 shares (1 June 2026). The latest reading sits at the bottom of that range.
| Settlement | Shares failed | Price | Value |
|---|---|---|---|
| 2026-10-13 | 172 | $3.72 | $640 |
| 2026-10-08 | 149 | $3.55 | $529 |
| 2026-09-25 | 34 | $3.80 | $129 |
| 2026-09-21 | 20,558 | $4.14 | $85K |
| 2026-09-11 | 256 | $3.97 | $1K |
| 2026-08-26 | 257 | $4.17 | $1K |
| 2026-08-14 | 237 | $4.08 | $967 |
| 2026-08-11 | 2 | $4.08 | $8 |
| 2026-08-04 | 183 | $3.82 | $699 |
| 2026-07-30 | 7,099 | $3.67 | $26K |
| 2026-07-20 | 7,647 | $4.49 | $34K |
| 2026-07-16 | 240 | $4.32 | $1K |
| 2026-06-23 | 665 | $4.58 | $3K |
| 2026-06-22 | 20,686 | $4.13 | $85K |
| 2026-06-15 | 174 | $3.96 | $689 |
| 2026-06-12 | 171 | $4.01 | $686 |
| 2026-06-03 | 1,351 | $4.05 | $5K |
| 2026-06-01 | 25,566 | $4.16 | $106K |
| 2026-05-22 | 4 | $4.24 | $17 |
| 2026-05-19 | 240 | $4.35 | $1K |
| 2026-05-13 | 11,842 | $3.52 | $42K |
| 2026-05-05 | 2,019 | $3.20 | $6K |
| 2026-04-13 | 338 | $3.60 | $1K |
| 2026-04-10 | 2,674 | $3.44 | $9K |
| 2026-04-09 | 1,977 | $3.45 | $7K |
| 2026-04-08 | 143 | $3.35 | $479 |
| 2026-03-31 | 249 | $2.76 | $687 |
| 2026-03-27 | 28 | $3.18 | $89 |
| 2026-03-26 | 1,251 | $3.17 | $4K |
| 2026-03-19 | 1,267 | $2.98 | $4K |
Insider trades
SEC Form 4, newest first. JSONInsiders at MGNX reported 1 open-market sell worth $129K in the last 90 days and no open-market buys. Latest filing: Bonvini Ezio (Sr VP, Research & CSO) on 2026-10-06.
| Date | Insider | Title | Type | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|---|
| 2026-10-06 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 8K | $2.60 | $21K | 194K |
| 2026-08-19 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Sell | 31K | $4.15 | $129K | 0 |
| 2026-08-17 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 40K | $2.60 | $104K | 186K |
| 2026-05-18 | Ferrante Karen Jean | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | STUMP DAVID C | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | HURWITZ EDWARD | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 48K |
| 2026-05-18 | Chhabra Meenu | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | Liu Margaret | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | SIEGEL JAY PHILIP | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | HEIDEN WILLIAM K | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 115K |
| 2026-05-18 | Jackson Scott Thomas | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-05-18 | O'Brien Federica F. | Director | Exercise or conversion | 4K | price not stated in the filing | not stated | 15K |
| 2026-02-15 | Risser Eric Blasius | President and CEO | Tax withholding | 6K | $1.71 | $11K | 77K |
| 2026-02-15 | Risser Eric Blasius | President and CEO | Exercise or conversion | 17K | price not stated in the filing | not stated | 84K |
| 2026-02-15 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding | 6K | $1.71 | $9K | 39K |
| 2026-02-15 | Spitznagel Thomas | Sr VP, Technical Ops | Exercise or conversion | 13K | price not stated in the filing | not stated | 44K |
| 2026-02-15 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Tax withholding | 5K | $1.71 | $9K | 31K |
| 2026-02-15 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Exercise or conversion | 13K | price not stated in the filing | not stated | 36K |
| 2026-02-15 | Karrels James | SVP and CFO | Tax withholding | 6K | $1.71 | $10K | 206K |
| 2026-02-15 | Karrels James | SVP and CFO | Exercise or conversion | 15K | price not stated in the filing | not stated | 212K |
| 2026-02-15 | Smith Beth Ann | VP, Controller & Treasurer | Exercise or conversion | 1K | price not stated in the filing | not stated | 13K |
| 2026-02-15 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding | 423 | $1.71 | $723 | 13K |
| 2026-02-15 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding | 6K | $1.71 | $11K | 146K |
| 2026-02-15 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 17K | price not stated in the filing | not stated | 152K |
| 2026-02-15 | Koenig Scott | Director | Exercise or conversion | 21K | $0.00 | $0 | 867K |
| 2026-02-08 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding | 4K | $1.81 | $8K | 136K |
| 2026-02-08 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 11K | price not stated in the filing | not stated | 140K |
| 2026-02-08 | Karrels James | SVP and CFO | Tax withholding | 4K | $1.81 | $7K | 197K |
| 2026-02-08 | Karrels James | SVP and CFO | Exercise or conversion | 10K | price not stated in the filing | not stated | 201K |
| 2026-02-08 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Exercise or conversion | 9K | price not stated in the filing | not stated | 26K |
| 2026-02-08 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Tax withholding | 3K | $1.81 | $6K | 23K |
| 2026-02-08 | Risser Eric Blasius | President and CEO | Exercise or conversion | 11K | price not stated in the filing | not stated | 71K |
| 2026-02-08 | Risser Eric Blasius | President and CEO | Tax withholding | 4K | $1.81 | $8K | 67K |
| 2026-02-08 | Smith Beth Ann | VP, Controller & Treasurer | Exercise or conversion | 2K | price not stated in the filing | not stated | 13K |
| 2026-02-08 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding | 612 | $1.81 | $1K | 12K |
| 2026-02-08 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding | 3K | $1.81 | $6K | 31K |
| 2026-02-08 | Spitznagel Thomas | Sr VP, Technical Ops | Exercise or conversion | 9K | price not stated in the filing | not stated | 34K |
| 2026-02-08 | Koenig Scott | Director | Exercise or conversion | 16K | price not stated in the filing | not stated | 846K |
| 2026-02-07 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 7K | price not stated in the filing | not stated | 131K |
| 2026-02-07 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding | 3K | $1.81 | $5K | 129K |
| 2026-02-07 | Karrels James | SVP and CFO | Exercise or conversion | 6K | price not stated in the filing | not stated | 193K |
| 2026-02-07 | Karrels James | SVP and CFO | Tax withholding | 2K | $1.81 | $4K | 191K |
| 2026-02-07 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Exercise or conversion | 6K | price not stated in the filing | not stated | 20K |
| 2026-02-07 | Peters Jeffrey Stuart | Senior VP, GC, and Secretary | Tax withholding | 2K | $1.81 | $4K | 17K |
| 2026-02-07 | Risser Eric Blasius | President and CEO | Tax withholding | 3K | $1.81 | $5K | 60K |
| 2026-02-07 | Risser Eric Blasius | President and CEO | Exercise or conversion | 7K | price not stated in the filing | not stated | 63K |
| 2026-02-07 | Smith Beth Ann | VP, Controller & Treasurer | Exercise or conversion | 3K | price not stated in the filing | not stated | 12K |
| 2026-02-07 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding | 1K | $1.81 | $2K | 11K |
| 2026-02-07 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding | 2K | $1.81 | $4K | 25K |
| 2026-02-07 | Spitznagel Thomas | Sr VP, Technical Ops | Exercise or conversion | 6K | price not stated in the filing | not stated | 27K |
| 2025-08-20 | HEIDEN WILLIAM K | Director | Buy | 50K | $1.49 | $74K | 111K |
| 2025-08-19 | HEIDEN WILLIAM K | Director | Buy | 51K | $1.52 | $77K | 62K |
| 2025-08-13 | Koenig Scott | Director | Exercise or conversion | 32K | $0.00 | $0 | 830K |
| 2025-08-13 | Koenig Scott | Director | Exercise or conversion | 21K | $0.00 | $0 | 799K |
| 2025-05-20 | SIEGEL JAY PHILIP | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | Chhabra Meenu | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | HURWITZ EDWARD | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 44K |
| 2025-05-20 | Liu Margaret | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | Ferrante Karen Jean | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | STUMP DAVID C | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | HEIDEN WILLIAM K | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | Jackson Scott Thomas | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-05-20 | O'Brien Federica F. | Director | Exercise or conversion | 7K | price not stated in the filing | not stated | 11K |
| 2025-02-15 | Eck Stephen L. | Chief Medical Officer | Tax withholding | 5K | $2.56 | $13K | 29K |
| 2025-02-15 | Eck Stephen L. | Chief Medical Officer | Exercise or conversion | 17K | $0.00 | $0 | 34K |
| 2025-02-15 | Spitznagel Thomas | Sr VP, Technical Ops | Exercise or conversion | 13K | $0.00 | $0 | 27K |
| 2025-02-15 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding | 6K | $2.56 | $14K | 21K |
| 2025-02-15 | Smith Beth Ann | VP, Controller & Treasurer | Exercise or conversion | 1K | $0.00 | $0 | 10K |
| 2025-02-15 | Smith Beth Ann | VP, Controller & Treasurer | Sell | 423 | $2.56 | $1K | 10K |
| 2025-02-15 | Risser Eric Blasius | Chief Operating Officer | Exercise or conversion | 17K | $0.00 | $0 | 62K |
| 2025-02-15 | Risser Eric Blasius | Chief Operating Officer | Tax withholding | 6K | $2.56 | $16K | 56K |
| 2025-02-15 | Peters Jeffrey Stuart | Senior VP and General Counsel | Exercise or conversion | 13K | $0.00 | $0 | 19K |
| 2025-02-15 | Peters Jeffrey Stuart | Senior VP and General Counsel | Tax withholding | 5K | $2.56 | $13K | 14K |
| 2025-02-15 | Koenig Scott | President and CEO | Exercise or conversion | 42K | $0.00 | $0 | 777K |
| 2025-02-15 | Karrels James | SVP, CFO and Secretary | Exercise or conversion | 15K | $0.00 | $0 | 193K |
| 2025-02-15 | Karrels James | SVP, CFO and Secretary | Tax withholding | 6K | $2.56 | $15K | 187K |
| 2025-02-15 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 17K | $0.00 | $0 | 124K |
| 2025-02-08 | Peters Jeffrey Stuart | Senior VP and General Counsel | Exercise or conversion | 9K | price not stated in the filing | not stated | 9K |
| 2025-02-08 | Peters Jeffrey Stuart | Senior VP and General Counsel | Tax withholding | 3K | $2.60 | $9K | 6K |
| 2025-02-08 | Spitznagel Thomas | Sr VP, Technical Ops | Exercise or conversion | 9K | price not stated in the filing | not stated | 17K |
| 2025-02-08 | Spitznagel Thomas | Sr VP, Technical Ops | Tax withholding | 4K | $2.60 | $10K | 14K |
| 2025-02-08 | Koenig Scott | President and CEO | Grant | 32K | $0.00 | $0 | 735K |
| 2025-02-08 | Smith Beth Ann | VP, Controller & Treasurer | Exercise or conversion | 2K | price not stated in the filing | not stated | 9K |
| 2025-02-08 | Smith Beth Ann | VP, Controller & Treasurer | Tax withholding | 612 | $2.60 | $2K | 9K |
| 2025-02-08 | Karrels James | SVP, CFO and Secretary | Exercise or conversion | 10K | price not stated in the filing | not stated | 181K |
| 2025-02-08 | Karrels James | SVP, CFO and Secretary | Tax withholding | 4K | $2.60 | $10K | 178K |
| 2025-02-08 | Risser Eric Blasius | Chief Operating Officer | Tax withholding | 4K | $2.60 | $11K | 46K |
| 2025-02-08 | Risser Eric Blasius | Chief Operating Officer | Exercise or conversion | 11K | price not stated in the filing | not stated | 50K |
| 2025-02-08 | Bonvini Ezio | Sr VP, Research & CSO | Tax withholding | 4K | $2.60 | $11K | 108K |
| 2025-02-08 | Bonvini Ezio | Sr VP, Research & CSO | Exercise or conversion | 11K | price not stated in the filing | not stated | 112K |
| 2025-02-08 | Eck Stephen L. | Chief Medical Officer | Exercise or conversion | 11K | $0.00 | $0 | 21K |
| 2025-02-08 | Eck Stephen L. | Chief Medical Officer | Tax withholding | 3K | $2.60 | $9K | 18K |
| 2024-10-07 | Koenig Scott | President and CEO | Gift | 53K | price not stated in the filing | not stated | 427K |
| 2024-10-07 | Koenig Scott | President and CEO | Gift | 53K | price not stated in the filing | not stated | 0 |
| 2024-09-23 | Koenig Scott | President and CEO | Gift | 374K | price not stated in the filing | not stated | 703K |
| 2024-09-23 | Koenig Scott | President and CEO | Gift | 374K | price not stated in the filing | not stated | 374K |
| 2024-05-20 | HURWITZ EDWARD | Director | Exercise or conversion | 5K | $0.00 | $0 | 38K |
| 2024-05-20 | Ferrante Karen Jean | Director | Exercise or conversion | 5K | $0.00 | $0 | 5K |
| 2024-05-20 | Chhabra Meenu | Director | Exercise or conversion | 5K | $0.00 | $0 | 5K |
| 2024-05-20 | Liu Margaret | Director | Exercise or conversion | 5K | $0.00 | $0 | 5K |
Form 4 filings are due within two business days of the trade. Insiders sell for many reasons that say nothing about the company; open-market buys are rarer.
Large holders (13D and 13G)
One row per reporting person with its latest filing, newest first. JSON3 holders report 5% or more of MGNX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Armistice Capital, LLC at 7.9% of the class (5,006,752 shares), filed 2026-08-14 for an event on 2026-06-30.
| Filed | Form | Holder | Shares | Of class | Event |
|---|---|---|---|---|---|
| 2026-08-14 | 13G/Ano. 8 | Armistice Capital, LLCinvestment adviser, other entity | 5.0M | 7.9% | 2026-06-30 |
| 2026-08-14 | 13G/Ano. 8 | Steven Boydparent holding company, individual | 5.0M | 7.9% | 2026-06-30 |
| 2026-08-03 | 13G/Ano. 1 | BANK OF AMERICA CORP /DE/parent holding company | 2.6M | 4.0% | 2026-06-30 |
| 2026-07-29 | 13G | BlackRock, Inc.parent holding company | 4.5M | 7.1% | 2026-06-30 |
| 2026-07-20 | 13G/Ano. 1 | Millennium Management LLCother entity | 2.4M | 3.7% | 2026-06-30 |
| 2026-07-20 | 13G/Ano. 1 | Millennium Group Management LLCother entity | 2.4M | 3.7% | 2026-06-30 |
| 2026-07-20 | 13G/Ano. 1 | Israel A. Englanderindividual | 2.4M | 3.7% | 2026-06-30 |
| 2026-03-27 | 13G/Ano. 6 | The Vanguard Groupinvestment adviser | 0 | 0.0% | 2026-03-13 |
| 2026-02-13 | 13G/Ano. 2 | FHMLS XI, L.L.C.other entity | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | James N. Topperindividual | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Frazier Life Sciences Public Fund, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | FHMLSP, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | FHMLSP, L.L.C.other entity | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Frazier Life Sciences X, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | FHMLS X, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | FHMLS X, L.L.C.other entity | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Frazier Life Sciences XI, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | FHMLS XI, L.P.partnership | 0 | 0.0% | 2025-12-31 |
| 2026-02-13 | 13G/Ano. 2 | Patrick J. Heronindividual | 0 | 0.0% | 2025-12-31 |
| 2026-01-06 | 13G/Ano. 1 | Bellevue Group AGparent holding company, corporation | 0 | 0.0% | 2025-12-05 |
| 2026-01-06 | 13G/Ano. 1 | Bellevue Asset Management AGcorporation | 0 | 0.0% | 2025-12-05 |
| 2025-11-12 | 13G/Ano. 1 | Wasatch Advisors LPinvestment adviser | 2.0M | 3.1% | 2025-09-30 |
13F holders
Tracked managers holding MGNX at their latest 13F. JSON5 of the 30 tracked managers held MGNX at their latest 13F, $40.3M in total at quarter-end prices. Renaissance Technologies is the largest at $12.2M (0.0% of its portfolio) as of 2026-06-30. Over the prior quarter 1 added shares and 4 cut.
| Fund | Quarter | Shares | Value | Of portfolio | Change in shares |
|---|---|---|---|---|---|
| Renaissance Technologies | 2026-06-30 | 2.6M | $12.2M | 0.02% | -331K |
| Two Sigma Investments | 2026-06-30 | 2.5M | $11.4M | 0.01% | -62K |
| Millennium Management | 2026-06-30 | 2.4M | $11.0M | 0.00% | -420K |
| D. E. Shaw & Co. | 2026-06-30 | 1.1M | $4.9M | 0.00% | +5K |
| Citadel Advisors | 2026-06-30 | 180K | $831K | 0.00% | -603K |
Only the 30 tracked managers on the funds hub; a 13F reports long positions in US listed stock at quarter end, 45 days late, and says nothing about shorts or positions sold since.
What this page is
Macrogenics in the regulatory record
Regulators publish company data in separate files that never sit next to each other: FINRA's twice-monthly short interest, its daily short sale volume, the SEC's fails-to-deliver counts, and each insider's Form 4. A company page puts those series for one ticker on one URL, with planned sales, large holders, 13F holders and financials beside them, so the short position, the daily flow, the settlement fails and what insiders are doing can be read together.
Each section has its own history table, a one-line summary of the latest figures and its own JSON and CSV links, and says when its source last updated.
This page follows Macrogenics (MGNX), SEC CIK 1125345, listed on Nasdaq, classified by the SEC as pharmaceutical preparations. The cross-market tables live on the short interest and insider transactions hubs.
Source and updates
- Short interest
- FINRA consolidated short interestSource: FINRA.Twice a month, about eight business days after settlement. Latest 2026-10-15.JSON and CSV
- Daily short volume
- FINRA Reg SHO daily filesSource: FINRA.Every trading day, the morning after FINRA posts it. Latest 2026-11-02.JSON and CSV
- Fails to deliver
- SEC fails-to-deliver dataSource: SEC.Twice a month, a few weeks after the half month ends. Latest 2026-10-13.JSON and CSV
- Large holders
- SEC EDGAR Schedule 13D and 13GSource: SEC.New filings appear shortly after the SEC posts them. A 13D is due within five business days of crossing 5%; a 13G follows the passive schedule. Latest 2026-08-14.JSON and CSV
- 13F holders
- SEC EDGAR Form 13F-HRSource: SEC.Quarterly, filed within 45 days of quarter end; 30 tracked managers. Latest 2026-06-30.JSON and CSV
- Earnings dates
- SEC EDGAR 8-K filings (Item 2.02)Source: SEC.Twice a day. Reported dates come from the company's 8-K filings; the next date is marked as an estimate until the 8-K arrives. Latest 2026-08-13.JSON and CSV
- Insider trades
- SEC EDGAR Form 4Source: SEC.New filings appear shortly after the SEC posts them; they're due two business days after the trade. Latest 2026-10-06.JSON and CSV
- Company record
- EDGAR filing index for CIK 1125345Ticker, name and exchange from the SEC's company list, refreshed weekly.
- Rate limits
- 10 requests a minute without a key, 30 with a free key from a free account.
How to read it
- Read the position against the flow: rising short interest with a high daily short share is new shorting; rising short interest with a normal short share is old shorts holding on.
- Insider buys next to a large short position are rare and stand out; insider sells next to one are common and mean little.
- Fails to deliver matter relative to the float, not in absolute shares; a million failed shares in a mega cap is noise.
Analysis of what the data shows, not advice. XOOMAR does not recommend buying, selling or holding anything.
Other companies the SEC classifies as pharmaceutical preparations
Other company pages
- STESTERIS
- STLDSteel Dynamics
- STRCStrategy
- STRLSterling Infrastructure
- STTState Street
- STXSeagate Technology Holdings
- STZConstellation Brands
- SUISun Communities
- SUNBSunbelt Rentals Holdings
- SWSmurfit Westrock
- SWKStanley Black & Decker
- SWKSSkyworks Solutions
- SXTCChina SXT Pharmaceuticals
- SYFSynchrony Financial
- SYKStryker
- SYNASynaptics
Datasets
Frequently Asked Questions
How much of MGNX is sold short?
5,060,376 shares were held short at the 2026-10-15 settlement, 8.2 days of average volume. FINRA publishes the next count about eight business days after the 15th and the last business day of the month.
What is MGNX's daily short volume?
On 2026-11-02, 151,632 of the 280,832 MGNX shares reported to FINRA were sold short, 54.0% of the day's reported volume. Short volume is a flow for one day, not a position.
Does MGNX have fails to deliver?
The SEC's latest file shows 172 MGNX shares failed to deliver at settlement 2026-10-13. Fails are reported per settlement date and published twice a month with a lag.
Are MGNX insiders buying or selling?
Insiders at MGNX reported 1 open-market sell worth $129K in the last 90 days and no open-market buys. Latest filing: Bonvini Ezio (Sr VP, Research & CSO) on 2026-10-06.
Who owns 5% or more of MGNX?
3 holders report 5% or more of MGNX in their latest filing, all on Schedule 13G (passive). The largest reported stake is Armistice Capital, LLC at 7.9% of the class (5,006,752 shares), filed 2026-08-14 for an event on 2026-06-30.
Which tracked 13F managers own MGNX?
5 of the 30 tracked 13F managers held MGNX shares at their latest filing, $40.3M in all. The largest: Renaissance Technologies (2.6M shares, $12.2M), Two Sigma Investments (2.5M shares, $11.4M), Izzy Englander's Millennium Management (2.4M shares, $11.0M), D. E. Shaw & Co. (1.1M shares, $4.9M), Ken Griffin's Citadel Advisors (180K shares, $831K).
Data on this page is provided for informational purposes only and is not financial advice. See our editorial policy.