Winton Group
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Winton Group’s SIGA Technologies SIGA Stock Holding History

Winton Group’s Portfolio SIGA Stock Details SIGA Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$275K Sell
75,647
-48,744
-39% -$218K 0.01% 913
2026
Q1 		$665K Buy
124,391
+27,014
+28% +$168K 0.02% 638
2025
Q4 		$595K Sell
97,377
-8,206
-8% -$58.4K 0.02% 599
2025
Q3 		$966K Buy
+105,583
New +$844K 0.04% 466
2025
Q1 		– Sell
-101,644
Closed -$611K – 779
2024
Q4 		$611K Sell
101,644
-44,331
-30% -$296K 0.04% 430
2024
Q3 		$985K Buy
145,975
+7,315
+5% +$63.9K 0.07% 327
2024
Q2 		$1.05M Buy
+138,660
New +$1.13M 0.07% 220
2024
Q1 		– Sell
-25,693
Closed -$144K – 853
2023
Q4 		$144K Sell
25,693
-7,040
-22% -$37.7K 0.01% 682
2023
Q3 		$172K Buy
32,733
+19,543
+148% +$96.3K 0.01% 680
2023
Q2 		$66.6K Buy
+13,190
New +$75K 0.01% 733
2022
Q1 		– Sell
-21,064
Closed -$158K – 1128
2021
Q4 		$158K Sell
21,064
-84,891
-80% -$647K 0.01% 956
2021
Q3 		$783K Buy
105,955
+16,646
+19% +$107K 0.04% 629
2021
Q2 		$561K Buy
89,309
+19,932
+29% +$137K 0.03% 848
2021
Q1 		$451K Buy
69,377
+14,854
+27% +$101K 0.03% 944
2020
Q4 		$396K Sell
54,523
-21,363
-28% -$151K 0.03% 906
2020
Q3 		$521K Sell
75,886
-3,705
-5% -$25.2K 0.02% 1102
2020
Q2 		$470K Buy
79,591
+19,542
+33% +$112K 0.01% 1193
2020
Q1 		$287K Buy
60,049
+1,502
+3% +$7.31K 0.01% 1181
2019
Q4 		$279K Buy
+58,547
New +$298K ﹤0.01% 1378

Other funds holding SIGA

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
AC
AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
FWSM
First Wilshire Securities Management Pasadena, California $486M AUM 50.29% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Winton Group's SIGA Position: Q2 2026 in Review

Winton Group reduced its SIGA Technologies (SIGA) stake by 39% in Q2 2026, selling an estimated $218K and leaving 75,647 shares worth $275K. The position accounts for 0.01% of the portfolio, ranked #913.

Winton Group first reported a position in SIGA in Q4 2019 and has held it in 19 quarters since. The position peaked at $1.05M in Q2 2024. 161 funds tracked by Wall St. Rank hold SIGA as of Q2 2026.

  • Winton Group held 75,647 shares of SIGA Technologies worth $275K as of Q2 2026.
  • Winton Group sold 48,744 SIGA Technologies shares in Q2 2026, an estimated $218K.
  • SIGA Technologies made up 0.01% of Winton Group's portfolio in Q2 2026, its #913 holding.
  • Winton Group first reported a position in SIGA Technologies in Q4 2019 and has held it in 19 quarters since.
  • Winton Group's SIGA Technologies position peaked at $1.05M in Q2 2024.
  • 161 funds tracked by Wall St. Rank held SIGA Technologies as of Q2 2026.

Based on Winton Group's 13F filing for Q2 2026, filed 7 Aug 2026.