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Siga Technologies (SIGA) Institutional Ownership

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$2.86 -0.02 (-0.52%)
As of 11:05 AM Eastern
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Institutional Ownership Changes (13F Filings) for Siga Technologies (NASDAQ:SIGA)

Current
Institutional Ownership
Percentage
55.40%
Number of
Institutional Buyers
(last 12 months)
98
Total
Institutional Inflows
(last 12 months)
$62.92M
Number of
Institutional Sellers
(last 12 months)
43
Total
Institutional Outflows
(last 12 months)
$22.27M
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SIGA Institutional Buying and Selling by Quarter

Siga Technologies Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/13/2026Connor Clark & Lunn Investment Management Ltd.69,708$254K0.0%N/A0.097%
8/12/2026 Ieq Capital LLC26,000$95K0.0%N/A0.036%
8/11/2026 OneAscent Financial Services LLC18,198$66K0.0%N/A0.025%
8/10/2026 Denali Advisors LLC414,436$1.51M0.2%N/A0.577%
8/7/2026 BlackRock Inc.4,186,282$15.24M0.0%N/A5.837%
8/7/2026 Deutsche Bank AG37,870$138K0.0%N/A0.053%
8/6/2026 Bank of New York Mellon Corp265,684$967K0.0%N/A0.370%
8/6/2026 State of Wyoming15,350$56K0.0%N/A0.021%
6/16/2026Empowered Funds LLC30,316$162K0.0%N/A0.042%
5/19/2026Bank of America Corp DE484,672$2.59M0.0%-24.4%0.676%
5/18/2026Empowered Funds LLC30,316$162K0.0%N/A0.042%
5/16/2026Quantinno Capital Management LP31,589$169K0.0%+58.0%0.044%
5/16/2026Lazard Asset Management LLC24,519$131K0.0%-48.7%0.034%
5/14/2026Renaissance Technologies LLC475,013$2.54M0.0%+25.6%0.662%
5/14/2026Arrowstreet Capital Limited Partnership1,525,960$8.16M0.0%+48.9%2.128%
5/14/2026Sei Investments Co.48,420$259K0.0%+93.5%0.068%
5/13/2026 First Trust Advisors LP160,355$858K0.0%+3.5%0.224%
5/12/2026First Wilshire Securities Management Inc.890,498$4.76M1.1%+30.2%1.242%
5/7/2026 Dimensional Fund Advisors LP2,702,724$14.46M0.0%+6.5%3.768%
5/5/2026 Bank of New York Mellon Corp256,803$1.37M0.0%+1.0%0.358%
5/4/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management53,694$287K0.0%+22.2%0.075%
4/30/2026Hsbc Holdings PLC13,385$71K0.0%-68.1%0.019%
4/28/2026DGS Capital Management LLC42,434$227K0.0%-15.8%0.059%
4/25/2026 Strs Ohio109,900$588K0.0%+22.0%0.153%
3/20/2026Hsbc Holdings PLC42,011$257K0.0%+33.8%0.059%
2/24/2026DGS Capital Management LLC50,370$308K0.1%+51.4%0.070%
2/19/2026Invesco Ltd.113,437$693K0.0%+7.8%0.158%
2/18/2026State of Tennessee Department of Treasury36,398$244K0.0%+56.6%0.051%
2/18/2026 EP Wealth Advisors LLC20,155$123K0.0%N/A0.028%
2/18/2026Uniplan Investment Counsel Inc.378,257$2.31M0.6%-4.6%0.528%
2/18/2026Wellington Management Group LLP127,969$782K0.0%-10.6%0.179%
2/18/2026Oxford Asset Management LLP34,786$213K0.1%N/A0.049%
2/18/2026Millennium Management LLC489,310$2.99M0.0%+90.9%0.683%
2/18/2026Man Group plc57,544$352K0.0%+21.9%0.080%
2/18/2026Janus Henderson Group PLC188,717$1.15M0.0%-34.7%0.264%
2/18/2026Bridgeway Capital Management LLC197,868$1.21M0.0%-9.2%0.276%
2/17/2026 Guggenheim Capital LLC12,826$78K0.0%N/A0.018%
2/17/2026Schonfeld Strategic Advisors LLC44,754$273K0.0%+217.3%0.062%
2/17/2026AQR Capital Management LLC872,795$5.33M0.0%+150.7%1.219%
2/17/2026Lazard Asset Management LLC47,766$292K0.0%+195.5%0.067%
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2/17/2026Trexquant Investment LP57,597$352K0.0%+27.1%0.080%
2/17/2026Jump Financial LLC15,643$96K0.0%-78.9%0.022%
2/17/2026Price T Rowe Associates Inc. MD46,344$284K0.0%+8.4%0.065%
2/17/2026 Russell Investments Group Ltd.35,255$215K0.0%+27.2%0.049%
2/17/2026ExodusPoint Capital Management LP54,014$330K0.0%+64.2%0.075%
2/17/2026Royal Bank of Canada4,996$30K0.0%-93.7%0.007%
2/16/2026Squarepoint Ops LLC15,014$92K0.0%N/A0.021%
2/16/2026Mariner LLC11,560$71K0.0%N/A0.016%
2/16/2026Barclays PLC77,325$472K0.0%+6.5%0.108%
2/13/2026 Kestra Advisory Services LLC16,100$98K0.0%+41.5%0.022%
2/13/2026Inspire Advisors LLC16,767$102K0.0%N/A0.023%
2/13/2026 Segall Bryant & Hamill LLC274,008$1.67M0.0%-2.4%0.383%
2/13/2026Jacobs Levy Equity Management Inc.496,166$3.03M0.0%+7.0%0.693%
2/13/2026 First Trust Advisors LP154,944$947K0.0%+2.2%0.216%
2/13/2026Charles Schwab Investment Management Inc.316,701$1.94M0.0%-9.4%0.442%
2/13/2026 State Street Corp1,075,570$6.57M0.0%+4.0%1.502%
2/13/2026Martingale Asset Management L P92,260$564K0.0%-12.7%0.129%
2/13/2026Wells Fargo & Company MN45,154$276K0.0%+46.7%0.063%
2/13/2026Macquarie Group Ltd.244,853$1.50M0.0%-13.9%0.342%
2/12/2026Jane Street Group LLC120,858$738K0.0%+11.3%0.169%
2/12/2026Brooklyn Investment Group49,189$307K0.0%N/A0.069%
2/12/2026 State Board of Administration of Florida Retirement System238,975$1.46M0.0%+103.1%0.334%
2/12/2026Renaissance Technologies LLC378,100$2.31M0.0%+22.6%0.528%
2/12/2026 Dimensional Fund Advisors LP2,536,794$15.50M0.0%+4.3%3.542%
2/12/2026Integrated Quantitative Investments LLC104,645$639K0.1%N/A0.146%
2/12/2026 Federated Hermes Inc.139,510$852K0.0%-60.0%0.195%
2/12/2026 Campbell & CO Investment Adviser LLC55,648$340K0.0%-33.3%0.078%
2/12/2026Aviva PLC78,893$482K0.0%+41.8%0.110%
2/12/2026First Wilshire Securities Management Inc.684,053$4.18M1.1%-0.6%0.955%
2/11/2026CSM Advisors LLC627,870$3.84M0.1%+5.3%0.877%
2/11/2026 Deutsche Bank AG31,512$193K0.0%+5.4%0.044%
2/11/2026Franklin Resources Inc.60,132$367K0.0%-25.1%0.084%
2/11/2026Brandywine Global Investment Management LLC175,030$1.07M0.0%-3.6%0.244%
2/11/2026O Shaughnessy Asset Management LLC49,657$303K0.0%+10.8%0.069%
2/11/2026AltraVue Capital LLC2,408,824$14.72M1.2%-0.4%3.364%
2/11/2026 Vestcor Inc53,317$326K0.0%+265.1%0.074%
2/11/2026 WINTON GROUP Ltd97,377$595K0.0%-7.8%0.136%
2/11/2026 Parallel Advisors LLC7,969$49K0.0%+47.0%0.011%
2/11/2026 State of Wyoming82,949$507K0.1%+41.7%0.116%
2/10/2026Goldman Sachs Group Inc.647,146$3.95M0.0%+21.6%0.904%
2/10/2026 AXQ Capital LP17,030$104K0.0%N/A0.024%
2/10/2026 Intech Investment Management LLC16,877$103K0.0%-16.8%0.024%
2/9/2026 Geode Capital Management LLC1,004,734$6.14M0.0%+0.7%1.403%
2/9/2026Royce & Associates LP611,019$3.73M0.0%-10.2%0.853%
2/6/2026 Legato Capital Management LLC580,545$3.55M0.3%+13.4%0.811%
2/6/2026 LSV Asset Management538,630$3.29M0.0%+28.8%0.752%
2/6/2026 ProShare Advisors LLC10,659$65K0.0%N/A0.015%
2/3/2026 Denali Advisors LLC361,800$2.21M0.2%+0.4%0.505%
2/2/2026 Strs Ohio90,100$551K0.0%+35.7%0.126%
1/30/2026 Precision Wealth Strategies LLC67,794$414K0.1%N/A0.095%
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1/30/2026 Strategic Blueprint LLC51,100$312K0.0%N/A0.071%
1/26/2026CWM LLC5,027$31K0.0%+148.6%0.007%
1/23/2026 Farther Finance Advisors LLC4,150$25K0.0%+418.1%0.006%
1/23/2026 State of Alaska Department of Revenue11,018$67K0.0%+192.5%0.015%
1/20/2026 October Effect Ltd23,100$141K0.2%-10.0%0.032%
1/16/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management43,922$268K0.0%N/A0.061%
1/14/2026 Exchange Traded Concepts LLC39,888$244K0.0%+26.9%0.056%
1/12/2026 DAVENPORT & Co LLC50,000$306K0.0%N/A0.070%
1/9/2026 SG Americas Securities LLC10,666$65K0.0%-23.2%0.015%
1/8/2026 Wealth Enhancement Advisory Services LLC65,942$439K0.0%+9.1%0.092%


SIGA Institutional Ownership - Frequently Asked Questions

During the previous two years, 161 institutional investors and hedge funds held shares of Siga Technologies. The most heavily invested institutionals were Vanguard Group Inc. ($24.30M), BlackRock Inc. ($15.24M), AltraVue Capital LLC ($14.72M), Dimensional Fund Advisors LP ($14.46M), American Century Companies Inc. ($9.16M), Arrowstreet Capital Limited Partnership ($8.16M), and Hotchkis & Wiley Capital Management LLC ($7.57M).Learn more on Siga Technologies' institutional investors.

55.40% of Siga Technologies' stock is owned by institutional investors. Learn more on SIGA's institutional investor holdings.

Of the 140 institutional investors that purchased Siga Technologies' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($4.19M), Hotchkis & Wiley Capital Management LLC ($2.33M), Arrowstreet Capital Limited Partnership ($756.78K), CSM Advisors LLC ($627.87K), Denali Advisors LLC ($567.28K), AQR Capital Management LLC ($537.71K), and Dimensional Fund Advisors LP ($513.17K).

Institutional investors have bought a total of 11,289,733 shares in the last 24 months. This purchase volume represents approximately $62.92M in transactions.

Of the 41 institutional investors that sold Siga Technologies' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Hotchkis & Wiley Capital Management LLC ($1.24M), Federated Hermes Inc. ($223.45K), Bank of America Corp DE ($156.75K), Campbell & CO Investment Adviser LLC ($142.77K), Janus Henderson Group PLC ($100.37K), Ameriprise Financial Inc. ($94.42K), and AltraVue Capital LLC ($92.32K).

Institutional investors have sold a total of 2,797,494 shares in the last 24 months. This volume of shares sold represents approximately $22.27M in transactions.


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Institutional ownership data for NASDAQ:SIGA is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/13/2026. New 13F filings are added each quarter as they're published.
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