SIGA TECHNOLOGIES INC (SIGA) Institutional Ownership Changes & 13F Activity

SIGA TECHNOLOGIES INC (SIGA). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include First Wilshire Securities Management Inc, Qube Research & Technologies Ltd, Jacobs Levy Equity Management, Inc, Goldman Sachs Group Inc, and Ameriprise Financial Inc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Cim Investment Management IncBuy+1,771+7.3%26,150$95.19KQ2 2026Sep 29, 2026
Envestnet Asset Management IncBuy+5,987+49.7%18,040$65.67KQ2 2026Sep 23, 2026
State Street CorpBuy+122,051+12.1%1,133,989$4.13MQ2 2026Sep 22, 2026
Manufacturers Life Insurance Company, TheBuy+2,724+23.4%14,366$52.29KQ2 2026Sep 09, 2026
Citadel Advisors LlcSell-153,891-21.8%551,246$2.01MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemSell-1,647-74.1%576$2.10KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+291+1.5%19,170$69.78KQ2 2026Aug 19, 2026
Public Employees Retirement System Of OhioBuy+20,900+116.8%38,800$141.23KQ2 2026Aug 17, 2026
Empowered Funds, LlcBuy+13,299+43.9%43,615$158.76KQ2 2026Aug 17, 2026
First Wilshire Securities Management IncBuy+449,385+50.5%1,339,883$4.88MQ2 2026Aug 14, 2026
Qube Research & Technologies LtdBuy+325,806+78.5%740,910$2.70MQ2 2026Aug 14, 2026
Jacobs Levy Equity Management, IncBuy+275,017+94.2%566,863$2.06MQ2 2026Aug 14, 2026
Goldman Sachs Group IncSell-231,896-37.1%393,007$1.43MQ2 2026Aug 14, 2026
Ameriprise Financial IncBuy+193,368—193,368$703.86KQ2 2026Aug 14, 2026
D. E. Shaw & Co., Inc.Sell-191,485-42.0%264,900$964.24KQ2 2026Aug 14, 2026
Uniplan Investment Counsel, Inc.Buy+188,940+50.9%560,353$2.04MQ2 2026Aug 14, 2026
Royce & Associates LpSell-116,636-17.5%551,010$2.01MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+113,275+24.3%579,599$2.11MQ2 2026Aug 14, 2026
Invesco Ltd.Buy+113,091—113,091$411.65KQ2 2026Aug 14, 2026
Hotchkis & Wiley Capital Management LlcBuy+87,000+10.5%914,047$3.33MQ2 2026Aug 14, 2026
Two Sigma Investments, LpSell-75,946-17.5%357,715$1.30MQ2 2026Aug 14, 2026
Man Group PlcBuy+62,835+66.5%157,348$572.75KQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+62,668—62,668$228.11KQ2 2026Aug 14, 2026
Atom Investors LpBuy+57,464—57,464$209.17KQ2 2026Aug 14, 2026
Bank Of America CorpSell-57,397-11.8%427,275$1.56MQ2 2026Aug 14, 2026
Schonfeld Strategic Advisors LlcBuy+41,937+163.5%67,581$245.99KQ2 2026Aug 14, 2026
Tudor Investment Corp Et AlBuy+37,237—37,237$135.54KQ2 2026Aug 14, 2026
Susquehanna International Group, LlpBuy+28,547+115.3%53,314$194.06KQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+26,315+2.2%1,245,992$4.54MQ2 2026Aug 14, 2026
Cambria Investment Management, L.P.Buy+22,950+54.5%65,033$236.72KQ2 2026Aug 14, 2026
Showing 30 of 180

Frequently asked questions about SIGA activity

  • Which institutional owners are buying SIGA?

    Institutional owners buying SIGA include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in SIGA activity?

    "Buy" means an investor increased their reported position in SIGA compared to the prior reporting period. This reflects growing exposure to SIGA TECHNOLOGIES INC (SIGA) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in SIGA increasing?

    Institutional interest in SIGA can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.