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..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Cornerstone Financial Management Llc | Buy | +177 | — | 177 | $1.08K | Q4 2025 | Aug 28, 2026 |
| Point Nemo Capital, Llc | Buy | +85,553 | — | 85,553 | $522.73K | Q4 2025 | May 15, 2026 |
| Hsbc Holdings Plc | Buy | +42,011 | — | 42,011 | $256.69K | Q4 2025 | Mar 06, 2026 |
| Dgs Capital Management, Llc | Buy | +17,102 | +51.4% | 50,370 | $307.76K | Q4 2025 | Feb 24, 2026 |
| Sunbelt Securities, Inc. | Buy | +3 | — | 3 | $18.00 | Q4 2025 | Feb 20, 2026 |
| Corient Private Wealth Llc | Buy | +14,020 | — | 14,020 | $85.66K | Q4 2025 | Feb 19, 2026 |
| State Of Tennessee, Department Of Treasury | Buy | +36,398 | — | 36,398 | $243.87K | Q4 2025 | Feb 18, 2026 |
| Ep Wealth Advisors, Llc | Buy | +20,155 | — | 20,155 | $123.15K | Q4 2025 | Feb 18, 2026 |
| Onyx Bridge Wealth Group Llc | Buy | +13,000 | — | 13,000 | $79.43K | Q4 2025 | Feb 18, 2026 |
| Citadel Advisors Llc | Buy | +1,043,083 | — | 1,043,083 | $6.37M | Q4 2025 | Feb 17, 2026 |
| Aqr Capital Management Llc | Buy | +872,795 | — | 872,795 | $5.33M | Q4 2025 | Feb 17, 2026 |
| Hotchkis & Wiley Capital Management Llc | Buy | +819,447 | — | 819,447 | $5.01M | Q4 2025 | Feb 17, 2026 |
| Bank Of America Corp | Buy | +641,421 | — | 641,421 | $3.92M | Q4 2025 | Feb 17, 2026 |
| D. E. Shaw & Co., Inc. | Buy | +554,571 | — | 554,571 | $3.39M | Q4 2025 | Feb 17, 2026 |
| Millennium Management Llc | Buy | +489,310 | — | 489,310 | $2.99M | Q4 2025 | Feb 17, 2026 |
| Uniplan Investment Counsel, Inc. | Buy | +378,257 | — | 378,257 | $2.31M | Q4 2025 | Feb 17, 2026 |
| Northern Trust Corp | Buy | +375,847 | — | 375,847 | $2.30M | Q4 2025 | Feb 17, 2026 |
| Nomura Asset Management International Inc. | Buy | +244,853 | — | 244,853 | $1.50M | Q4 2025 | Feb 17, 2026 |
| State Of Wisconsin Investment Board | Buy | +215,316 | — | 215,316 | $1.32M | Q4 2025 | Feb 17, 2026 |
| Ameriprise Financial Inc | Buy | +198,010 | — | 198,010 | $1.21M | Q4 2025 | Feb 17, 2026 |
| Bridgeway Capital Management, Llc | Buy | +197,868 | — | 197,868 | $1.21M | Q4 2025 | Feb 17, 2026 |
| Janus Henderson Group Plc | Buy | +188,717 | — | 188,717 | $1.15M | Q4 2025 | Feb 17, 2026 |
| Qube Research & Technologies Ltd | Buy | +164,835 | — | 164,835 | $1.01M | Q4 2025 | Feb 17, 2026 |
| Wellington Management Group Llp | Buy | +127,969 | — | 127,969 | $781.89K | Q4 2025 | Feb 17, 2026 |
| Canada Pension Plan Investment Board | Buy | +75,000 | — | 75,000 | $458.25K | Q4 2025 | Feb 17, 2026 |
| Creative Planning | Buy | +72,281 | — | 72,281 | $441.64K | Q4 2025 | Feb 17, 2026 |
| Alliancebernstein L.P. | Buy | +63,710 | — | 63,710 | $389.27K | Q4 2025 | Feb 17, 2026 |
| Trexquant Investment Lp | Buy | +57,597 | — | 57,597 | $351.92K | Q4 2025 | Feb 17, 2026 |
| Man Group Plc | Buy | +57,544 | — | 57,544 | $351.59K | Q4 2025 | Feb 17, 2026 |
| Exoduspoint Capital Management, Lp | Buy | +54,014 | — | 54,014 | $330.03K | Q4 2025 | Feb 17, 2026 |
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.
Related SIGA Institutional Insights
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- Institutional Portfolio Overlap & Shared Holdings
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- SIGA Insider Trading & SEC Form 4 Activity
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