| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 4.7% | $20,625,600 | 3,386,798 | BlackRock, Inc. | 31 Mar 2025 |
As of 30 Sep 2025, 193 institutional investors reported holding 33,956,442 shares of SIGA TECHNOLOGIES INC - Common Stock (SIGA). This represents 47% of the company’s total 72,059,532 outstanding shares.
The largest institutional shareholders of SIGA TECHNOLOGIES INC - Common Stock (SIGA) together control 35% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 4.9% | 3,526,009 | -2.8% | 0% | $32,262,984 |
| VANGUARD GROUP INC | 3.7% | 2,655,942 | +5.7% | 0% | $24,301,870 |
| DIMENSIONAL FUND ADVISORS LP | 3.4% | 2,432,380 | +1% | 0% | $22,254,626 |
| AltraVue Capital, LLC | 3.4% | 2,417,514 | -3.3% | 1.8% | $22,120,253 |
| AMERICAN CENTURY COMPANIES INC | 1.7% | 1,232,732 | -12% | 0.01% | $11,279,503 |
| CITADEL ADVISORS LLC | 1.6% | 1,125,163 | -19% | 0.01% | $10,295,242 |
| STATE STREET CORP | 1.4% | 1,033,854 | -6.9% | 0% | $9,459,764 |
| GEODE CAPITAL MANAGEMENT, LLC | 1.4% | 998,222 | +0.03% | 0% | $9,135,064 |
| JUPITER ASSET MANAGEMENT LTD | 1.4% | 990,648 | 0% | 0.08% | $9,064,429 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 1.2% | 834,683 | +44% | 0% | $7,637,349 |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 1.1% | 827,587 | -60% | 0.02% | $7,572,421 |
| FIRST WILSHIRE SECURITIES MANAGEMENT INC | 0.95% | 687,897 | -1.3% | 1.7% | $6,294,258 |
| ROYCE & ASSOCIATES LP | 0.94% | 680,222 | +5.9% | 0.06% | $6,224,031 |
| MORGAN STANLEY | 0.91% | 656,962 | +26% | 0% | $6,011,209 |
| CSM Advisors, LLC | 0.83% | 596,512 | +67% | 0.15% | $5,458,000 |
| NEW YORK STATE COMMON RETIREMENT FUND | 0.79% | 570,561 | -3.8% | 0.01% | $5,220,633 |
| GOLDMAN SACHS GROUP INC | 0.74% | 532,140 | +2% | 0% | $4,869,081 |
| BANK OF AMERICA CORP /DE/ | 0.72% | 518,771 | +28% | 0% | $4,746,755 |
| Legato Capital Management LLC | 0.71% | 512,039 | -4.6% | 0.51% | $4,685,157 |
| D. E. Shaw & Co., Inc. | 0.69% | 499,753 | +15% | 0% | $4,572,740 |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 0.64% | 463,705 | +5.7% | 0.02% | $4,242,901 |
| LSV ASSET MANAGEMENT | 0.58% | 418,330 | +9.8% | 0.01% | $3,828,000 |
| Uniplan Investment Counsel, Inc. | 0.55% | 396,519 | -14% | 0.36% | $3,628,150 |
| NORTHERN TRUST CORP | 0.55% | 392,880 | -2.6% | 0% | $3,594,852 |
| DENALI ADVISORS LLC | 0.5% | 360,300 | -7.9% | 0.37% | $3,296,745 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 263,646 | $1,646,979 | +$502,251 | $6.11 | 13 |
| 2025 Q3 | 33,956,442 | $310,651,969 | -$1,869,086 | $9.15 | 193 |
| 2025 Q2 | 34,444,240 | $224,591,401 | -$1,096,611 | $6.52 | 174 |
| 2025 Q1 | 35,087,868 | $192,291,876 | +$2,372,079 | $5.48 | 162 |
| 2024 Q4 | 34,603,029 | $207,972,461 | -$7,741,997 | $6.01 | 167 |
| 2024 Q3 | 35,648,653 | $240,649,515 | +$11,157,842 | $6.75 | 168 |
| 2024 Q2 | 33,803,270 | $256,572,834 | +$1,760,002 | $7.59 | 153 |
| 2024 Q1 | 33,558,858 | $287,953,335 | -$5,489,670 | $8.56 | 142 |
| 2023 Q4 | 19,639 | $109,978 | +$3,892 | $5.60 | 1 |
| 2023 Q3 | 34,427,962 | $180,735,285 | +$7,164,205 | $5.25 | 125 |
| 2023 Q2 | 33,176,389 | $168,048,852 | +$7,622,773 | $5.05 | 128 |
| 2023 Q1 | 31,668,588 | $181,996,005 | +$1,109,444 | $5.75 | 138 |
| 2022 Q4 | 30,955,137 | $227,806,098 | +$14,551,339 | $7.36 | 152 |
| 2022 Q3 | 28,085,315 | $289,241,114 | +$20,352,617 | $10.30 | 141 |
| 2022 Q2 | 26,086,522 | $301,705,294 | +$63,036,444 | $11.58 | 134 |
| 2022 Q1 | 21,180,569 | $150,154,781 | -$6,643,847 | $7.09 | 100 |
| 2021 Q4 | 22,101,124 | $166,117,226 | +$155,253 | $7.52 | 107 |
| 2021 Q3 | 21,555,590 | $159,152,980 | +$8,870,576 | $7.39 | 97 |
| 2021 Q2 | 20,296,498 | $127,464,437 | -$6,527,868 | $6.28 | 99 |
| 2021 Q1 | 21,476,773 | $139,595,061 | -$3,533,528 | $6.50 | 104 |
| 2020 Q4 | 19,475,222 | $141,586,804 | -$6,328,424 | $7.27 | 91 |
| 2020 Q3 | 22,968,036 | $157,792,646 | -$1,835,804 | $6.87 | 101 |
| 2020 Q2 | 23,143,935 | $136,780,120 | +$2,205,050 | $5.91 | 85 |
| 2020 Q1 | 20,108,976 | $96,117,230 | +$380,303 | $4.78 | 87 |
| 2019 Q4 | 22,792,968 | $108,721,564 | +$2,661,143 | $4.77 | 94 |
| 2019 Q3 | 22,109,537 | $113,418,877 | +$5,388,658 | $5.12 | 93 |
| 2019 Q2 | 21,035,763 | $119,471,436 | +$9,976,396 | $5.68 | 88 |
| 2019 Q1 | 19,549,598 | $117,490,286 | +$607,740 | $6.01 | 99 |
| 2018 Q4 | 19,226,232 | $151,884,457 | +$12,833,385 | $7.90 | 86 |
| 2018 Q3 | 16,468,586 | $113,468,868 | +$2,998,636 | $6.89 | 71 |
| 2018 Q2 | 15,868,145 | $94,263,080 | +$17,124,959 | $5.94 | 56 |
| 2018 Q1 | 12,967,705 | $79,485,642 | +$46,417,460 | $6.13 | 33 |
| 2017 Q4 | 5,251,130 | $25,468,000 | -$78,001 | $4.85 | 3 |
| 2017 Q3 | 5,276,545 | $16,726,000 | -$967,738 | $3.17 | 4 |
| 2017 Q2 | 5,581,801 | $16,968,000 | +$1,521,974 | $3.04 | 3 |
| 2017 Q1 | 5,081,140 | $15,955,000 | +$71,048 | $3.15 | 2 |
| 2016 Q4 | 5,058,526 | $14,569,000 | +$296,569 | $2.90 | 2 |
| 2016 Q3 | 4,955,721 | $14,818,000 | $0 | $2.99 | 1 |
| 2016 Q2 | 4,955,721 | $7,136,000 | $0 | $1.44 | 1 |
| 2016 Q1 | 4,955,721 | $2,627,000 | -$23,918 | $0.53 | 1 |
| 2015 Q4 | 5,020,527 | $2,108,000 | +$69,124 | $0.42 | 2 |
| 2015 Q3 | 5,227,473 | $6,168,000 | -$159,807 | $1.18 | 3 |
| 2015 Q2 | 5,476,548 | $7,065,000 | -$420,499 | $1.29 | 4 |
| 2015 Q1 | 5,693,489 | $11,044,500 | -$11,949,352 | $1.94 | 11 |
| 2014 Q4 | 14,122,177 | $20,331,200 | -$198,298 | $1.44 | 40 |
| 2014 Q3 | 14,297,181 | $20,655,350 | -$4,886,286 | $1.44 | 48 |
| 2014 Q2 | 15,123,795 | $42,649,705 | -$4,290,154 | $2.82 | 63 |
| 2014 Q1 | 16,509,428 | $51,152,648 | +$2,522,676 | $3.10 | 70 |