SIGA SIGA Technologies, Inc.

NASDAQ
$3.29

SIGA Technologies, Inc. (SIGA) Institutional Ownership

What the institutions did with SIGA last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.

Managers compared
194
filed both this quarter and last
Managers holding
159
-20 on the quarter
Buyers
95
15 opened new
Sellers
81
35 sold out entirely
Buyer share
54.0%
of managers who traded it
Breadth
+8.0
net buyers, as a share of those trading

Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.

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Ownership map

Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.

Cut Unchanged Added Color saturates at ±50%.

Largest holders

Manager Shares % of reported
BlackRock, Inc. 4.2M 12.0%
DIMENSIONAL FUND ADVISORS LP 2.7M 7.8%
AltraVue Capital, LLC 2.3M 6.7%
VANGUARD CAPITAL MANAGEMENT LLC 1.7M 4.9%
AMERICAN CENTURY COMPANIES INC 1.5M 4.3%
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP 1.5M 4.2%
GEODE CAPITAL MANAGEMENT, LLC 1.4M 4.1%
FIRST WILSHIRE SECURITIES MANAGEMENT INC 1.3M 3.8%
AQR CAPITAL MANAGEMENT LLC 1.2M 3.6%
STATE STREET CORP 1.1M 3.3%
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC 914.0K 2.6%
Qube Research & Technologies Ltd 740.9K 2.1%
NEW YORK STATE COMMON RETIREMENT FUND 590.8K 1.7%
MILLENNIUM MANAGEMENT LLC 579.6K 1.7%
JACOBS LEVY EQUITY MANAGEMENT, INC 566.9K 1.6%
Uniplan Investment Counsel, Inc. 560.4K 1.6%
CITADEL ADVISORS LLC 551.2K 1.6%
ROYCE & ASSOCIATES LP 551.0K 1.6%
VANGUARD PORTFOLIO MANAGEMENT LLC 549.7K 1.6%
Legato Capital Management LLC 512.0K 1.5%
LSV ASSET MANAGEMENT 461.3K 1.3%
BANK OF AMERICA CORP /DE/ 427.3K 1.2%
RENAISSANCE TECHNOLOGIES LLC 425.8K 1.2%
MORGAN STANLEY 421.0K 1.2%
DENALI ADVISORS LLC 414.4K 1.2%

Largest changes

Manager Action Previous Current Change
BlackRock, Inc. Increased 3.5M 4.2M +692.1K
FIRST WILSHIRE SECURITIES MANAGEMENT INC Increased 890.5K 1.3M +449.4K
HRT FINANCIAL LP Sold Out 360.1K 0 -360.1K
Qube Research & Technologies Ltd Increased 415.1K 740.9K +325.8K
JACOBS LEVY EQUITY MANAGEMENT, INC Increased 291.8K 566.9K +275.0K
NOMURA ASSET MANAGEMENT INTERNATIONAL INC. Sold Out 244.9K 0 -244.9K
MACQUARIE GROUP LTD Sold Out 244.9K 0 -244.9K
GOLDMAN SACHS GROUP INC Reduced 624.9K 393.0K -231.9K
D. E. Shaw & Co., Inc. Reduced 456.4K 264.9K -191.5K
Uniplan Investment Counsel, Inc. Increased 371.4K 560.4K +188.9K
ACADIAN ASSET MANAGEMENT LLC Sold Out 188.5K 0 -188.5K
AMERICAN CENTURY COMPANIES INC Increased 1.3M 1.5M +188.3K
MORGAN STANLEY Increased 263.3K 421.0K +157.7K
CITADEL ADVISORS LLC Reduced 705.1K 551.2K -153.9K
STATE STREET CORP Increased 1.0M 1.1M +122.1K
STATE BOARD OF ADMINISTRATION OF FLORIDA RETIREMENT SYSTEM Reduced 131.6K 13.4K -118.3K
ROYCE & ASSOCIATES LP Reduced 667.6K 551.0K -116.6K
VICTORY CAPITAL MANAGEMENT INC Reduced 376.6K 260.1K -116.5K
MILLENNIUM MANAGEMENT LLC Increased 466.3K 579.6K +113.3K
O'SHAUGHNESSY ASSET MANAGEMENT, LLC Sold Out 107.1K 0 -107.1K
Creative Planning Increased 168.6K 275.5K +107.0K
AltraVue Capital, LLC Reduced 2.4M 2.3M -104.9K
GEODE CAPITAL MANAGEMENT, LLC Increased 1.3M 1.4M +101.5K
Trexquant Investment LP Sold Out 93.4K 0 -93.4K
HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC Increased 827.0K 914.0K +87.0K
UBS Group AG Increased 104.1K 182.0K +77.9K
LSV ASSET MANAGEMENT Reduced 538.6K 461.3K -77.3K
LOS ANGELES CAPITAL MANAGEMENT LLC Increased 69.1K 145.1K +76.0K
TWO SIGMA INVESTMENTS, LP Reduced 433.7K 357.7K -75.9K
State of Wyoming Reduced 85.2K 15.4K -69.9K
Man Group plc Increased 94.5K 157.3K +62.8K
XTX Topco Ltd New 0 62.7K +62.7K
Atom Investors LP New 0 57.5K +57.5K
BANK OF AMERICA CORP /DE/ Reduced 484.7K 427.3K -57.4K
JAMES INVESTMENT RESEARCH, INC. Sold Out 53.5K 0 -53.5K
JANE STREET GROUP, LLC Sold Out 52.1K 0 -52.1K
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Reduced 1.5M 1.5M -51.1K
RENAISSANCE TECHNOLOGIES LLC Reduced 475.0K 425.8K -49.2K
WINTON GROUP Ltd Reduced 124.4K 75.6K -48.7K
Abel Hall, LLC New 0 45.6K +45.6K
Schonfeld Strategic Advisors LLC Increased 25.6K 67.6K +41.9K
Vestcor Inc Sold Out 41.2K 0 -41.2K
VIKING FUND MANAGEMENT LLC New 0 40.0K +40.0K
VANGUARD PORTFOLIO MANAGEMENT LLC Reduced 587.0K 549.7K -37.3K
TUDOR INVESTMENT CORP ET AL New 0 37.2K +37.2K
FMR LLC Increased 23.4K 58.9K +35.5K
Connor, Clark & Lunn Investment Management Ltd. Increased 36.1K 69.7K +33.6K
FRANKLIN RESOURCES INC Reduced 43.9K 11.0K -32.9K
Graham Capital Management, L.P. Sold Out 29.9K 0 -29.9K
Campbell & CO Investment Adviser LLC Increased 92.1K 121.2K +29.1K
SUSQUEHANNA INTERNATIONAL GROUP, LLP Increased 24.8K 53.3K +28.5K
Inspire Advisors, LLC Increased 40.8K 68.8K +28.0K
MIRABELLA FINANCIAL SERVICES LLP Sold Out 26.8K 0 -26.8K
AQR CAPITAL MANAGEMENT LLC Increased 1.2M 1.2M +26.3K
Engineers Gate Manager LP Sold Out 26.0K 0 -26.0K
LAZARD ASSET MANAGEMENT LLC Sold Out 24.5K 0 -24.5K
STRS OHIO Increased 109.9K 134.2K +24.3K
Cambria Investment Management, L.P. Increased 42.1K 65.0K +23.0K
DENALI ADVISORS LLC Reduced 436.9K 414.4K -22.5K
EntryPoint Capital, LLC Increased 38.2K 60.3K +22.1K

13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.