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Siga Technologies (SIGA) Institutional Ownership

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$3.09 +0.12 (+4.14%)
As of 03:00 PM Eastern
This is a fair market value price provided by Massive. Learn more.
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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)
89
Total
Institutional Inflows
(last 12 months)
$59.41M
Number of
Institutional Sellers
(last 12 months)
39
Total
Institutional Outflows
(last 12 months)
$20.65M
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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
11/6/2026Russell Investments Group Ltd.149,786$509K0.0%+240.0%0.208%
10/29/2026 State of Wyoming85,904$292K0.0%+459.6%0.120%
10/22/2026 Seven Mile Advisory10,019$34K0.0%N/A0.014%
10/19/2026 Abel Hall LLC35,057$119K0.0%-23.1%0.049%
10/17/2026 SummerHaven Investment Management LLC93,804$319K0.2%-7.1%0.131%
10/15/2026 State of Alaska Department of Revenue24,251$82K0.0%+34.6%0.034%
10/9/2026 Williams & Novak Wealth Management LLC17,925$61K0.0%N/A0.025%
9/9/2026WINTON GROUP Ltd75,647$275K0.0%-39.2%0.105%
9/9/2026Squarepoint Ops LLC51,040$186K0.0%-12.9%0.071%
8/19/2026Hsbc Holdings PLC16,904$62K0.0%+26.3%0.024%
8/18/2026Empowered Funds LLC43,615$159K0.0%N/A0.061%
8/18/2026Jefferies Financial Group Inc.62,667$228K0.0%N/A0.087%
8/18/2026Public Employees Retirement System of Ohio38,800$141K0.0%N/A0.054%
8/17/2026Bank of America Corp DE427,275$1.56M0.0%N/A0.595%
8/15/2026Man Group plc157,348$573K0.0%N/A0.219%
8/14/2026Hsbc Holdings PLC16,904$62K0.0%N/A0.024%
8/14/2026Canada Pension Plan Investment Board69,400$253K0.0%N/A0.097%
8/14/2026The Manufacturers Life Insurance Company14,366$52K0.0%N/A0.020%
8/13/2026Connor Clark & Lunn Investment Management Ltd.69,708$254K0.0%N/A0.097%
8/12/2026Ieq Capital LLC26,000$95K0.0%N/A0.036%
8/11/2026OneAscent Financial Services LLC18,198$66K0.0%N/A0.025%
8/10/2026Denali Advisors LLC414,436$1.51M0.2%-5.1%0.577%
8/7/2026BlackRock Inc.4,186,282$15.24M0.0%N/A5.837%
8/7/2026Deutsche Bank AG37,870$138K0.0%N/A0.053%
8/6/2026Bank 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%
5/13/2026First 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%
5/5/2026Bank 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%
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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%
2/18/2026EP 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%
2/17/2026Guggenheim 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%
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%
2/17/2026Russell 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%
2/13/2026Segall 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%
2/13/2026First 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%
2/13/2026State 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%
2/12/2026State 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%
2/12/2026Federated Hermes Inc.139,510$852K0.0%-60.0%0.195%
2/12/2026Campbell & 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%
2/11/2026Deutsche Bank AG31,512$193K0.0%+5.4%0.044%
2/11/2026Franklin Resources Inc.60,132$367K0.0%-25.1%0.084%
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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%
2/11/2026Vestcor Inc53,317$326K0.0%+265.1%0.074%
2/11/2026WINTON 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%
2/10/2026AXQ Capital LP17,030$104K0.0%N/A0.024%
2/10/2026Intech Investment Management LLC16,877$103K0.0%-16.8%0.024%


SIGA Institutional Ownership - Frequently Asked Questions

During the previous two years, 162 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 142 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), Bank of America Corp DE ($779.19K), Arrowstreet Capital Limited Partnership ($756.78K), CSM Advisors LLC ($627.87K), AQR Capital Management LLC ($524.71K), and Dimensional Fund Advisors LP ($513.17K).

Institutional investors have bought a total of 11,034,423 shares in the last 24 months. This purchase volume represents approximately $59.05M in transactions.

Of the 38 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. ($209.67K), Bank of America Corp DE ($156.75K), Janus Henderson Group PLC ($100.37K), Ameriprise Financial Inc. ($94.42K), AltraVue Capital LLC ($92.32K), and Royal Bank of Canada ($74.55K).

Institutional investors have sold a total of 2,659,641 shares in the last 24 months. This volume of shares sold represents approximately $20.65M 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 11/6/2026. New 13F filings are added each quarter as they're published.
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