13F Insight
DOSSIER · 13F Holders · Q1 2026Mega-capCrowded
MGNX

MACROGENICS INC

114 institutions still hold MACROGENICS INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 556099109·114 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 7.0%
vs prior quarter
13F value held
$91M
62.0% inst. owned
of float
Holders
114
+124 QoQ
filers reporting
Activity
+87 / −77
+839 added · −889 reduced
this quarter
Concentration
19.06%
ARMISTICE CAPITAL, LLC #1
top holder share
AI Holders Summary · Q1 2026

114 institutions reported MGNX in Q1 2026. ARMISTICE CAPITAL, LLC leads at 19.1% of the visible book. +124 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
ARMISTICE CAPITAL, LLC
CIK 0001601086
$17M6.0M0.31%Q1 202602
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$9M3.0M0.01%Q1 202603
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
$8M2.8M0.00%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$8M2.7M0.00%Q1 202605
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$7M2.5M0.01%Q1 202606
BANK OF AMERICA CORP /DE/
CIK 0000070858
$7M2.4M0.00%Q1 202607
RA CAPITAL MANAGEMENT, L.P.
CIK 0001346824
$5M1.9M0.06%Q1 202608
WASATCH ADVISORS LP
CIK 0000814133
$5M1.6M0.03%Q1 202609
Vanguard Portfolio Management
CIK 0002100121· Index
$3M1.2M0.00%Q1 202610
BlackRock, Inc.
CIK 0002012383
$3M1.2M0.00%Q1 202611
Connor, Clark & Lunn Investment Management Ltd.
CIK 0001596800
$3M867K0.01%Q1 202612
MARSHALL WACE, LLP
CIK 0001318757
$2M1.3M0.00%Q4 202513
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$2M697K0.00%Q1 202614
TWO SIGMA ADVISERS, LP
CIK 0001478735
$2M1.2M0.00%Q4 202515
CITADEL ADVISORS LLC
CIK 0001423053
$2M1.1M0.00%Q4 202516
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$2M609K0.00%Q1 202617
DIADEMA PARTNERS LP
CIK 0002026172
$2M600K0.29%Q1 202618
MACKENZIE FINANCIAL CORP
CIK 0000919859
$2M597K0.00%Q1 202619
SUSQUEHANNA INTERNATIONAL GROUP, LLP
CIK 0001446194· Market maker
$1M513K0.00%Q1 202620
Affinity Asset Advisors, LLC
CIK 0001773195
$1M500K0.07%Q1 2026
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