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 (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Citadel Advisors Llc, Aqr Capital Management Llc, Hotchkis & Wiley Capital Management Llc, Bank Of America Corp, and D. E. Shaw & Co., Inc..

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Cornerstone Financial Management LlcBuy+177—177$1.08KQ4 2025Aug 28, 2026
Point Nemo Capital, LlcBuy+85,553—85,553$522.73KQ4 2025May 15, 2026
Hsbc Holdings PlcBuy+42,011—42,011$256.69KQ4 2025Mar 06, 2026
Dgs Capital Management, LlcBuy+17,102+51.4%50,370$307.76KQ4 2025Feb 24, 2026
Sunbelt Securities, Inc.Buy+3—3$18.00Q4 2025Feb 20, 2026
Corient Private Wealth LlcBuy+14,020—14,020$85.66KQ4 2025Feb 19, 2026
State Of Tennessee, Department Of TreasuryBuy+36,398—36,398$243.87KQ4 2025Feb 18, 2026
Ep Wealth Advisors, LlcBuy+20,155—20,155$123.15KQ4 2025Feb 18, 2026
Onyx Bridge Wealth Group LlcBuy+13,000—13,000$79.43KQ4 2025Feb 18, 2026
Citadel Advisors LlcBuy+1,043,083—1,043,083$6.37MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+872,795—872,795$5.33MQ4 2025Feb 17, 2026
Hotchkis & Wiley Capital Management LlcBuy+819,447—819,447$5.01MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+641,421—641,421$3.92MQ4 2025Feb 17, 2026
D. E. Shaw & Co., Inc.Buy+554,571—554,571$3.39MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+489,310—489,310$2.99MQ4 2025Feb 17, 2026
Uniplan Investment Counsel, Inc.Buy+378,257—378,257$2.31MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+375,847—375,847$2.30MQ4 2025Feb 17, 2026
Nomura Asset Management International Inc.Buy+244,853—244,853$1.50MQ4 2025Feb 17, 2026
State Of Wisconsin Investment BoardBuy+215,316—215,316$1.32MQ4 2025Feb 17, 2026
Ameriprise Financial IncBuy+198,010—198,010$1.21MQ4 2025Feb 17, 2026
Bridgeway Capital Management, LlcBuy+197,868—197,868$1.21MQ4 2025Feb 17, 2026
Janus Henderson Group PlcBuy+188,717—188,717$1.15MQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+164,835—164,835$1.01MQ4 2025Feb 17, 2026
Wellington Management Group LlpBuy+127,969—127,969$781.89KQ4 2025Feb 17, 2026
Canada Pension Plan Investment BoardBuy+75,000—75,000$458.25KQ4 2025Feb 17, 2026
Creative PlanningBuy+72,281—72,281$441.64KQ4 2025Feb 17, 2026
Alliancebernstein L.P.Buy+63,710—63,710$389.27KQ4 2025Feb 17, 2026
Trexquant Investment LpBuy+57,597—57,597$351.92KQ4 2025Feb 17, 2026
Man Group PlcBuy+57,544—57,544$351.59KQ4 2025Feb 17, 2026
Exoduspoint Capital Management, LpBuy+54,014—54,014$330.03KQ4 2025Feb 17, 2026
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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.