No AI summary for this filing type
View Full Filing (SEC EDGAR)Macrogenics Inc
$3.25-3.6%
+$33.9M
Net Activity
+12.94% total shares
Institutions Holding
123
Popularity Rank
#4140
Avg Weight
0.02%
Total Value
$227.1M
Market Cap
$205.3M
123 institutions currently hold MGNX, with 76 net buyers and 57 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
57
Net Buying Institutions
76
Top 5 by Value
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Across its top 20 institutional holders, MGNX's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 9/100, avg. turnover score 45/100).
MGNX ranks #4140 out of 37696 tracked stocks by institutional interest, inside the more closely watched half of our coverage.
MGNX is a disclosed holding of Jim Simons (Renaissance Technologies), one of the tracked superinvestors on AlphaSMO — it makes up 0.0% of that fund's own 13F portfolio.
123 institutions disclose a position in MGNX, but none treat it as a major bet — even Armistice Capital, LLC, its most concentrated holder, allocates just 0.3% of its own portfolio to it.
MGNX is down 3.6% today, but institutions show net buying of $33.9M this quarter — a divergence between today's price move and the underlying institutional flow.
MGNX reported a net loss of $14.6M over the trailing twelve months.
+$59.9M
Total Buy Value
$29.9M
Total Sell Value
76
Net Buyers
57
Net Sellers
MGNX
Q2 2026
Top 5 Institutional Movers
MGNX does not currently have enough recent insider (Form 4) trading activity to compute a convergence signal against its 13F institutional flows.
13F data as of 2026-09-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
4
Filings (90d)
$501K
Total Est. Value
124K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| Thomas Spitznagel | 2026-09-21 | $66K |
| Jeffrey Peters | 2026-08-19 | $129K |
| Jay Siegel | 2026-08-17 | $176K |
| Jay Siegel | 2026-08-03 | $131K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
1
Active 5%+ Holders
| Reporting Person | Type | Filing Date | % of Class |
|---|---|---|---|
| Armistice Capital, LLC | 13G/A | 2026-08-14 | 7.9% |
| BANK OF AMERICA CORP /DE/ | 13G/A | 2026-08-03 | 4.0% |
| Millennium Management LLC | 13G/A | 2026-07-20 | 3.7% |
3
Filings (14d)
No AI summary for this filing type
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)MacroGenics (ticker MGNX) filed an 8-K on July 23, 2026, disclosing that it had issued a press release providing a clinical update on its ongoing Phase 1 study of MGC026. The press release is attached as an exhibit, but the filing excerpt does not include the specifics of that update.
View Full Filing (SEC EDGAR)556099109
The most-added stocks by 13F institutions this quarter
Institutions Holding
6,278
Total reported value
$2.2T
3254 13F institutions increased their position this quarter
Institutions Holding
6,025
Total reported value
$3.6T
3054 13F institutions increased their position this quarter
Institutions Holding
6,188
Total reported value
$1.8T
2995 13F institutions increased their position this quarter
The most widely held stocks tracked across all 13F institutions
Institutions Holding
5,283
Total reported value
$1.3T
Held by 5283 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,174
Total reported value
$671.0B
Held by 5174 institutions — one of the most-tracked stocks on AlphaSMO
Institutions Holding
5,106
Total reported value
$1.1T
Held by 5106 institutions — one of the most-tracked stocks on AlphaSMO
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