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SIGA

Siga Technologies Inc
$3.86 +0.14 (+3.76%) At close · Jul 2
Market Cap
$276.86M
Shares
71,724,097

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 182
Total Value: $180,843,675
Total Shares: 33,802,577
Showing 1–100 of 182 holdings by value · page 1 of 2

Institutional Ownership Trend

25 quarters

Holder Concentration

Across 182 13F filers · Δ vs Dec 31, 2025
Top Holder
10.3%
Jun 2023 → Mar 2026 · range 10.0% – 13.1%
+0.3 pts
Top 5
35.1%
Jun 2023 → Mar 2026 · range 34.6% – 43.3%
+0.5 pts
Top 10
52.1%
Jun 2023 → Mar 2026 · range 49.0% – 63.8%
+3.1 pts
HHI
380
Jun 2023 → Mar 2026 · range 361 – 534
Broadly held+19

Quarterly Activity

vs Dec 31, 2025
New
25
Increased
66
Decreased
69
Sold Out
44
Unchanged
22
Holder count: -19
Institutional value: -17.5%
Shares held: -5.8%

Top Buyers

vs Dec 31, 2025
Institution Added Now Holds Open
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP +500,880 1,525,960
Mega TWO SIGMA INVESTMENTS, LP +423,261 433,661
Mega AQR CAPITAL MANAGEMENT LLC +346,882 1,219,677
Mega GEODE CAPITAL MANAGEMENT, LLC +310,811 1,315,545
Large Qube Research & Technologies Ltd +250,269 415,104

Top Sellers

vs Dec 31, 2025
Institution Sold Now Holds Open
Mega CITADEL ADVISORS LLC −363,546 705,137
Mega MORGAN STANLEY −231,121 263,335
Large JACOBS LEVY EQUITY MANAGEMENT, INC −204,320 291,846
Mega JPMORGAN CHASE & CO −159,780 25,186
Mega BANK OF AMERICA CORP /DE/ −156,749 484,672

Top New Positions

vs Dec 31, 2025
Institution Acquired Value (USD) Open
Mega VANGUARD CAPITAL MANAGEMENT LLC 1,714,380 $9,171,933
Large HRT FINANCIAL LP 360,067 $1,926,358
Mega VANGUARD FIDUCIARY TRUST CO 275,178 $1,472,202
Mega Vanguard Global Advisers, LLC 90,778 $485,662
Large Jefferies Financial Group Inc. 62,667 $335,268

Top Sold-Out Positions

vs Dec 31, 2025
Institution Previously Held Last Value (USD) Open
Mega VANGUARD GROUP INC 2,723,750 $16,642,110
Large JUPITER ASSET MANAGEMENT LTD 990,648 $6,052,858
Mid CSM Advisors, LLC 627,870 $3,836,285
Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC 197,868 $1,208,973
Large Brandywine Global Investment Management, LLC 175,030 $1,069,433
Filter: New 25 Increased 66 Reduced 69 Sold out 44 Unchanged 22
Showing 100 of 182
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $18,693,927 10.34% 3,494,193
Mega DIMENSIONAL FUND ADVISORS LP $14,459,571 8.00% 2,702,724
Mid AltraVue Capital, LLC $13,011,327 7.19% 2,432,024
Mega VANGUARD CAPITAL MANAGEMENT LLC $9,171,933 5.07% 1,714,380
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $8,163,886 4.51% 1,525,960
Mega AMERICAN CENTURY COMPANIES INC $7,050,144 3.90% 1,317,784
Mega GEODE CAPITAL MANAGEMENT, LLC $7,038,165 3.89% 1,315,545
Mega AQR CAPITAL MANAGEMENT LLC $6,525,267 3.61% 1,219,677
Mega STATE STREET CORP $5,413,868 2.99% 1,011,938
Small FIRST WILSHIRE SECURITIES MANAGEMENT INC Broker-Dealer $4,764,164 2.63% 890,498
Large HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC $4,424,701 2.45% 827,047
Mega CITADEL ADVISORS LLC $3,772,482 2.09% 705,137
Mid ROYCE & ASSOCIATES LP $3,571,906 1.98% 667,646
Mega GOLDMAN SACHS GROUP INC $3,343,231 1.85% 624,903
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $3,160,571 1.75% 590,761
Large LSV ASSET MANAGEMENT $2,881,670 1.59% 538,630
Mid Legato Capital Management LLC $2,739,408 1.51% 512,039
Mega BANK OF AMERICA CORP /DE/ Bank $2,592,994 1.43% 484,672
Large RENAISSANCE TECHNOLOGIES LLC $2,541,319 1.41% 475,013
Mega MILLENNIUM MANAGEMENT LLC $2,494,833 1.38% 466,324
Mega D. E. Shaw & Co., Inc. $2,441,659 1.35% 456,385
Small DENALI ADVISORS LLC $2,337,345 1.29% 436,887
Mega TWO SIGMA INVESTMENTS, LP $2,320,086 1.28% 433,661
Large Qube Research & Technologies Ltd $2,220,806 1.23% 415,104
Mega VICTORY CAPITAL MANAGEMENT INC $2,014,654 1.11% 376,571
Small Uniplan Investment Counsel, Inc. $1,987,059 1.10% 371,413
Large HRT FINANCIAL LP $1,926,358 1.07% 360,067
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $1,820,717 1.01% 340,321
Mega NORTHERN TRUST CORP Bank $1,819,934 1.01% 340,175
Large JACOBS LEVY EQUITY MANAGEMENT, INC $1,561,376 0.86% 291,846
Mega VANGUARD FIDUCIARY TRUST CO Bank $1,472,202 0.81% 275,178
Mid SEGALL BRYANT & HAMILL, LLC $1,463,342 0.81% 273,522
Mega MORGAN STANLEY $1,408,839 0.78% 263,335
Mega Bank of New York Mellon Corp Bank $1,373,894 0.76% 256,803
Large MACQUARIE GROUP LTD $1,309,963 0.72% 244,853
Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. $1,309,963 0.72% 244,853
Large ACADIAN ASSET MANAGEMENT LLC $1,008,389 0.56% 188,484
Mega JANUS HENDERSON GROUP PLC $1,003,237 0.55% 187,521
Mega AMERIPRISE FINANCIAL INC $981,922 0.54% 183,537
Large STATE OF WISCONSIN INVESTMENT BOARD $951,230 0.53% 177,800
Large Creative Planning $901,769 0.50% 168,555
Mega FIRST TRUST ADVISORS LP $857,899 0.47% 160,355
Large STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Pension $704,199 0.39% 131,626
Mid WINTON GROUP Ltd $665,491 0.37% 124,391
Mega Invesco Ltd. $596,619 0.33% 111,518
Large STRS OHIO $587,965 0.33% 109,900
Large O'SHAUGHNESSY ASSET MANAGEMENT, LLC $573,188 0.32% 107,138
Mega UBS Group AG $556,731 0.31% 104,062
Small SummerHaven Investment Management, LLC $540,483 0.30% 101,025
Mega Nuveen, LLC $539,809 0.30% 100,899
Large PRUDENTIAL FINANCIAL INC $538,156 0.30% 100,590
Large Man Group plc $505,644 0.28% 94,513
Large Trexquant Investment LP $499,904 0.28% 93,440
Mid MARTINGALE ASSET MANAGEMENT L P $493,591 0.27% 92,260
Mid Campbell & CO Investment Adviser LLC $492,868 0.27% 92,125
Mega Vanguard Global Advisers, LLC $485,662 0.27% 90,778
Large KLP KAPITALFORVALTNING AS $466,520 0.26% 87,200
Small State of Wyoming $456,034 0.25% 85,240
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $371,290 0.21% 69,400
Large LOS ANGELES CAPITAL MANAGEMENT LLC $369,588 0.20% 69,082
Large WEALTH ENHANCEMENT ADVISORY SERVICES, LLC $356,673 0.20% 66,668
Mega ALLIANCEBERNSTEIN L.P. $340,848 0.19% 63,710
Mega PRICE T ROWE ASSOCIATES INC /MD/ $338,852 0.19% 63,337
Large Jefferies Financial Group Inc. $335,268 0.19% 62,667
Large Squarepoint Ops LLC $313,354 0.17% 58,571
Mid Empirical Financial Services, LLC d.b.a. Empirical Wealth Management $287,262 0.16% 53,694
Small JAMES INVESTMENT RESEARCH, INC. $286,471 0.16% 53,546
Mega JANE STREET GROUP, LLC $278,627 0.15% 52,080
Mega RHUMBLINE ADVISERS $273,609 0.15% 51,142
Small Strategic Blueprint, LLC $267,500 0.15% 50,000
Large DAVENPORT & Co LLC $267,500 0.15% 50,000
Large SEI INVESTMENTS CO $259,046 0.14% 48,420
Mid EXCHANGE TRADED CONCEPTS, LLC $250,797 0.14% 46,878
Mega FRANKLIN RESOURCES INC $234,660 0.13% 43,862
Small DGS Capital Management, LLC $227,021 0.13% 42,434
Mid Cambria Investment Management, L.P. $225,144 0.12% 42,083
Mid Vestcor Inc $220,420 0.12% 41,200
Small Inspire Advisors, LLC $218,403 0.12% 40,823
Large Cresset Asset Management, LLC $217,691 0.12% 40,690
Small EntryPoint Capital, LLC $204,370 0.11% 38,200
Large Point72 Asset Management, L.P. $201,844 0.11% 37,728
Large Russell Investments Group, Ltd. $201,505 0.11% 37,665
Mega DEUTSCHE BANK AG\ Bank $198,827 0.11% 37,164
Large Connor, Clark & Lunn Investment Management Ltd. $192,942 0.11% 36,064
Large Quantinno Capital Management LP $169,001 0.09% 31,589
Large Empowered Funds, LLC $162,190 0.09% 30,316
Mid Graham Capital Management, L.P. $160,002 0.09% 29,907
Large FEDERATED HERMES, INC. $152,057 0.08% 28,422
Small MIRABELLA FINANCIAL SERVICES LLP $143,444 0.08% 26,812
Micro WASHINGTON GROWTH STRATEGIES LLC $140,255 0.08% 26,216
Mid Engineers Gate Manager LP $139,078 0.08% 25,996
Large Schonfeld Strategic Advisors LLC $137,195 0.08% 25,644
Mega JPMORGAN CHASE & CO $134,743 0.07% 25,186
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP $132,503 0.07% 24,767
Large LAZARD ASSET MANAGEMENT LLC $131,176 0.07% 24,519
Small CIM INVESTMENT MANAGEMENT INC $130,427 0.07% 24,379
Mega FMR LLC $125,199 0.07% 23,402
Large CIBC Bancorp USA Inc. Bank $125,103 0.07% 23,384
Micro Significant Wealth Partners LLC $123,750 0.07% 23,131
Large Mariner, LLC $112,473 0.06% 21,023
Key facts CIK 1010086 CUSIP 826917106 13F (30d) 5 filings 2 filers Visit website Investor relations

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