13F Insight
DOSSIER · 13F Holders · Q1 2026CyclicalNet sold
SIGA

SIGA TECHNOLOGIES INC

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

CUSIP 826917106·190 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 8.0%
vs prior quarter
13F value held
$130M
57.0% inst. owned
of float
Holders
190
+123 QoQ
filers reporting
Activity
+8 / −21
+897 added · −792 reduced
this quarter
Concentration
14.41%
BlackRock, Inc. #1
top holder share
AI Holders Summary · Q1 2026

190 institutions reported SIGA in Q1 2026. BlackRock, Inc. leads at 14.4% of the visible book. +123 net new institutions vs prior quarter — accumulation reading.

Top holders

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

#HolderValueShares% port.Quarter
01
BlackRock, Inc.
CIK 0002012383
$19M3.5M0.00%Q1 202602
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$14M2.7M0.00%Q1 202603
AltraVue Capital, LLC
CIK 0001740837
$13M2.4M1.12%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$9M1.7M0.00%Q1 202605
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP
CIK 0001164508
$8M1.5M0.00%Q1 202606
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$7M1.3M0.00%Q1 202607
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$7M1.3M0.00%Q1 202608
CITADEL ADVISORS LLC
CIK 0001423053
$7M1.1M0.00%Q4 202509
AQR CAPITAL MANAGEMENT LLC
CIK 0001167557
$7M1.2M0.00%Q1 202610
STATE STREET CORP
CIK 0000093751
$5M1.0M0.00%Q1 202611
FIRST WILSHIRE SECURITIES MANAGEMENT INC
CIK 0000732847
$5M890K1.07%Q1 202612
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC
CIK 0001164833
$4M827K0.01%Q1 202613
ROYCE & ASSOCIATES LP
CIK 0000906304
$4M668K0.04%Q1 202614
D. E. Shaw & Co., Inc.
CIK 0001009207
$3M555K0.00%Q4 202515
GOLDMAN SACHS GROUP INC
CIK 0000886982
$3M625K0.00%Q1 202616
NEW YORK STATE COMMON RETIREMENT FUND
CIK 0000810265
$3M591K0.00%Q1 202617
Vanguard Portfolio Management
CIK 0002100121· Index
$3M587K0.00%Q1 202618
Legato Capital Management LLC
CIK 0001442641
$3M512K0.25%Q1 202619
BANK OF AMERICA CORP /DE/
CIK 0000070858
$3M485K0.00%Q1 202620
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
$3M475K0.00%Q1 2026
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