SIGA SIGA Technologies, Inc.
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.
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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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.
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.