13F reference period
Q3 2026
Security Snapshot
SIGA TECHNOLOGIES INC - Common Stock (SIGA) Institutional Ownership
CUSIP: 826917106
13F Institutional Holders and Ownership History from Q1 2014 to Q3 2026
Institutions Reporting
75
Shares (Excl. Options)
15.57M
Full value: 15,566,170 · shares · 30 Sep 2026Price
$3.40
The headline uses the Q3 2026 reference period after its reporting deadline. Available reports may still be incomplete or amended.
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- Security type / class
- Equity / Common Stock
- Symbol
- SIGA on Nasdaq
- All holders as of 30 Sep 2026
- Q3 2026
- Total 13F shares
- 15,566,170
- Total 13F value
- $52,908,673
- Portfolio coverage rank
- 0%
- Share change
- -3,725,358
- Value change
- -$13,566,181
- Number of holders
- 75
- Shares outstanding
- 72,059,532
- SEC-reported price per share
- $3.38
- Insider filing price
- $3.38
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Filing notes and source
Key facts
- SIGA - SIGA TECHNOLOGIES INC - Common Stock is tracked under CUSIP 826917106.
- 75 institutions reported positions in Q3 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 162 to 75 between Q2 2026 and Q3 2026.
- SEC-reported value moved from to
$126.99M
Full value: $126,986,101 · USD · 30 Jun 2026.$52.91M
Full value: $52,908,673 · USD · 30 Sep 2026
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 75 institutions filings for Q3 2026.
Security key
826917106
13F reference period
Q3 2026
13F holders
75
13D/G owners
1
CIK / CUSIP context first
Open Q3 2026 holders
SIGA full holder history
SIGA TECHNOLOGIES INC SEC filings
SIGA TECHNOLOGIES INC company facts
SIGA TECHNOLOGIES INC insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 826917106:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
1
Security
SIGA
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 4.7% | $21,946,451 | 3,386,798 | BlackRock, Inc. | 31 Mar 2025 |
As of 30 Sep 2026,
75
institutional investors reported holding
shares of
SIGA TECHNOLOGIES INC - Common Stock (SIGA).
This represents
22%
of the company’s total
outstanding shares.
15.57M
Full value: 15,566,170 · shares · 30 Sep 202672.06M
Full value: 72,059,532 · shares · Stored outstanding share count13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
20%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| DIMENSIONAL FUND ADVISORS LP | 2.8% | 2,011,607 | -26% | 0% | $6,839,771 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4% | 1,720,976 | +0.48% | 0% | $5,851,318 |
| AMERICAN CENTURY COMPANIES INC | 2% | 1,430,117 | -5% | 0% | $4,862,398 |
| MORGAN STANLEY | 1.8% | 1,270,042 | +202% | 0% | $4,318,144 |
| STATE STREET CORP | 1.6% | 1,166,813 | +2.9% | 0% | $3,967,164 |
| Qube Research & Technologies Ltd | 1.6% | 1,164,207 | +57% | 0% | $3,958,304 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.6% | 1,139,906 | -23% | 0% | $3,875,680 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.6% | 1,120,293 | -21% | 0% | $3,809,959 |
| RENAISSANCE TECHNOLOGIES LLC | 0.88% | 637,236 | +50% | 0% | $2,166,602 |
| Uniplan Investment Counsel, Inc. | 0.79% | 568,394 | +1.4% | 0.19% | $1,932,542 |
| DENALI ADVISORS LLC | 0.57% | 411,636 | -0.68% | 0.14% | $1,399,562 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.57% | 407,605 | -26% | 0% | $1,385,857 |
| VANGUARD FIDUCIARY TRUST CO | 0.38% | 277,344 | -0.01% | 0% | $942,970 |
| Jump Financial, LLC | 0.3% | 218,295 | 0.01% | $742,202 | |
| LOS ANGELES CAPITAL MANAGEMENT LLC | 0.24% | 171,797 | +18% | 0% | $584,110 |
| DAVENPORT & Co LLC | 0.22% | 160,000 | +220% | 0% | $544,000 |
| Invesco Ltd. | 0.2% | 145,514 | +29% | 0% | $494,747 |
| STRS OHIO | 0.15% | 109,800 | -18% | 0% | $373,320 |
| EntryPoint Capital, LLC | 0.14% | 100,990 | +67% | 0.09% | $343,366 |
| BNP PARIBAS FINANCIAL MARKETS | 0.14% | 98,990 | 0% | $336,566 | |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 0.12% | 87,865 | 0.02% | $298,741 | |
| KLP KAPITALFORVALTNING AS | 0.12% | 87,200 | 0% | 0% | $296,480 |
| EXCHANGE TRADED CONCEPTS, LLC | 0.12% | 85,725 | +36% | 0% | $291,465 |
| MARTINGALE ASSET MANAGEMENT L P | 0.12% | 84,073 | -9% | 0.01% | $285,849 |
| Vanguard Global Advisers, LLC | 0.12% | 83,163 | +0.19% | 0% | $282,754 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
51
Headline period
Q3 2026
Rows shown
1-25 of 51
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q3 | 15,566,170 | $52,908,673 | -$13,566,181 | $3.40 | 75 |
| 2026 Q2 | 34,853,752 | $126,986,101 | -$126,964 | $3.64 | 162 |
| 2026 Q1 | 34,389,412 | $184,017,387 | -$8,413,624 | $5.35 | 182 |
| 2025 Q4 | 35,823,449 | $219,044,735 | +$8,977,270 | $6.11 | 198 |
| 2025 Q3 | 33,989,722 | $310,956,481 | -$1,812,025 | $9.15 | 195 |
| 2025 Q2 | 34,444,240 | $224,591,401 | -$1,096,617 | $6.52 | 174 |
| 2025 Q1 | 35,087,868 | $192,291,994 | +$2,372,072 | $5.48 | 162 |
| 2024 Q4 | 34,604,179 | $207,977,102 | -$7,735,828 | $6.01 | 167 |
| 2024 Q3 | 35,648,653 | $240,649,643 | +$11,172,706 | $6.75 | 166 |
| 2024 Q2 | 33,801,068 | $256,556,116 | +$1,743,400 | $7.59 | 148 |
| 2024 Q1 | 33,560,967 | $287,971,679 | -$4,112,729 | $8.56 | 142 |
| 2023 Q4 | 34,088,521 | $190,916,402 | -$1,744,917 | $5.60 | 126 |
| 2023 Q3 | 34,427,962 | $180,734,949 | +$7,164,161 | $5.25 | 125 |
| 2023 Q2 | 33,176,389 | $168,048,981 | +$7,622,712 | $5.05 | 128 |
| 2023 Q1 | 31,668,588 | $181,996,242 | +$1,094,029 | $5.75 | 138 |
| 2022 Q4 | 30,987,262 | $228,042,074 | +$12,857,472 | $7.36 | 154 |
| 2022 Q3 | 28,838,842 | $297,002,956 | +$26,345,105 | $10.30 | 145 |
| 2022 Q2 | 26,094,528 | $302,165,925 | +$63,278,735 | $11.58 | 136 |
| 2022 Q1 | 21,227,816 | $150,489,781 | -$6,877,910 | $7.09 | 103 |
| 2021 Q4 | 22,181,370 | $166,721,226 | +$537,549 | $7.52 | 109 |
| 2021 Q3 | 21,615,478 | $159,595,980 | +$9,341,424 | $7.39 | 99 |
| 2021 Q2 | 20,413,368 | $128,198,437 | -$7,207,931 | $6.28 | 98 |
| 2021 Q1 | 21,509,782 | $139,810,061 | -$3,577,344 | $6.50 | 103 |
| 2020 Q4 | 22,120,239 | $160,815,804 | -$6,110,599 | $7.27 | 94 |
| 2020 Q3 | 22,995,462 | $157,981,646 | -$1,884,769 | $6.87 | 103 |