Latest Period
Q2 2026
Security Snapshot
SIGA TECHNOLOGIES INC - Common Stock (SIGA) Institutional Ownership
CUSIP: 826917106
13F Institutional Holders and Ownership History from Q1 2014 to Q2 2026
Institutions Reporting
160
Shares (Excl. Options)
34,826,951
Price
$3.64
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- Security type / class
- Equity / Common Stock
- Symbol
- SIGA on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 34,826,951
- Total 13F value
- $126,888,545
- Portfolio coverage rank
- 0%
- Share change
- +704,433
- Value change
- -$124,047
- Number of holders
- 160
- Shares outstanding
- 72,059,532
- SEC-reported price per share
- $3.34
- Insider filing price
- $3.34
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
Key facts
- SIGA - SIGA TECHNOLOGIES INC - Common Stock is tracked under CUSIP 826917106.
- 160 institutions reported positions in Q2 2026.
- 1 significant owner is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 182 to 160 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $184,017,387 to $126,888,545.
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 160 institutions filings for Q2 2026.
Security key
826917106
Latest holder period
Q2 2026
13F holders
160
13D/G owners
1
CIK / CUSIP context first
Open Q2 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 Jun 2026, 160 institutional investors reported holding 34,826,951 shares of SIGA TECHNOLOGIES INC - Common Stock (SIGA). This represents 48% of the company’s total 72,059,532 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
38%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 5.8% | 4,186,282 | +20% | 0% | $15,238,067 |
| DIMENSIONAL FUND ADVISORS LP | 3.8% | 2,719,568 | +0.62% | 0% | $9,899,037 |
| AltraVue Capital, LLC | 3.2% | 2,327,144 | -4.3% | 0.61% | $8,470,804 |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.4% | 1,712,701 | -0.1% | 0% | $6,234,232 |
| AMERICAN CENTURY COMPANIES INC | 2.1% | 1,506,065 | +14% | 0% | $5,482,077 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 2% | 1,474,817 | -3.4% | 0% | $5,368,334 |
| GEODE CAPITAL MANAGEMENT, LLC | 2% | 1,417,092 | +7.7% | 0% | $5,159,233 |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | 1.9% | 1,339,883 | +50% | 1% | $4,877,174 |
| AQR CAPITAL MANAGEMENT LLC | 1.7% | 1,245,992 | +2.2% | 0% | $4,535,410 |
| STATE STREET CORP | 1.6% | 1,133,989 | +12% | 0% | $4,127,720 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 1.3% | 914,047 | +11% | 0.01% | $3,327,131 |
| Qube Research & Technologies Ltd | 1% | 740,910 | +78% | 0% | $2,696,912 |
| NEW YORK STATE COMMON RETIREMENT FUND | 0.82% | 590,761 | 0% | 0% | $2,150,370 |
| MILLENNIUM MANAGEMENT LLC | 0.8% | 579,599 | +24% | 0% | $2,109,740 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 0.79% | 566,863 | +94% | 0.01% | $2,063,381 |
| Uniplan Investment Counsel, Inc. | 0.78% | 560,353 | +51% | 0.19% | $2,039,686 |
| CITADEL ADVISORS LLC | 0.76% | 551,246 | -22% | 0% | $2,006,535 |
| ROYCE & ASSOCIATES LP | 0.76% | 551,010 | -17% | 0.02% | $2,005,676 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 0.76% | 549,697 | -6.4% | 0% | $2,000,897 |
| Legato Capital Management LLC | 0.71% | 512,039 | 0% | 0.15% | $1,863,822 |
| LSV ASSET MANAGEMENT | 0.64% | 461,307 | -14% | 0% | $1,679,000 |
| BANK OF AMERICA CORP /DE/ | 0.59% | 427,275 | -12% | 0% | $1,555,282 |
| RENAISSANCE TECHNOLOGIES LLC | 0.59% | 425,800 | -10% | 0% | $1,549,912 |
| MORGAN STANLEY | 0.58% | 421,009 | +60% | 0% | $1,532,474 |
| DENALI ADVISORS LLC | 0.58% | 414,436 | -5.1% | 0.15% | $1,508,547 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
50
Latest
Q2 2026
Rows shown
1-25 of 50
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 34,826,951 | $126,888,545 | -$124,047 | $3.64 | 160 |
| 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 |
| 2020 Q2 | 23,337,971 | $137,927,120 | +$2,595,604 | $5.91 | 89 |