Jane Street
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Jane Street’s SIGA Technologies SIGA Stock Holding History

Jane Street’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 		$63.7K Buy
+17,500
New +$78.3K ﹤0.01% 10830
2025
Q1 		– Sell
-13,700
Closed -$82.3K – 10504
2024
Q4 		$82.3K Sell
13,700
-8,600
-39% -$57.5K ﹤0.01% 8829
2024
Q3 		$151K Buy
+22,300
New +$195K ﹤0.01% 8815
2024
Q2 		– Sell
-41,400
Closed -$354K – 10119
2024
Q1 		$354K Buy
+41,400
New +$236K ﹤0.01% 7288
2023
Q1 		– Sell
-158,800
Closed -$1.17M – 9832
2022
Q4 		$1.17M Sell
158,800
-351,300
-69% -$3.08M ﹤0.01% 4737
2022
Q3 		$5.25M Sell
510,100
-26,400
-5% -$424K ﹤0.01% 2542
2022
Q2 		$6.21M Buy
+536,500
New +$4.83M ﹤0.01% 2346
2022
Q1 		– Sell
-17,700
Closed -$133K – 10954
2021
Q4 		$133K Buy
+17,700
New +$135K ﹤0.01% 9081

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 $3.37T AUM 44.26% 1-Year Est. Return

Jane Street's SIGA Position: Q2 2026 in Review

Jane Street sold out of SIGA Technologies (SIGA) in Q2 2026, closing a stake of 52,080 shares — an estimated $233K sold.

Jane Street first reported a position in SIGA in Q2 2013 and held it in 23 quarters. The position peaked at $1.43M in Q2 2022. 160 funds tracked by Wall St. Rank hold SIGA as of Q2 2026.

  • Jane Street reported no remaining SIGA Technologies position as of Q2 2026 after selling out during the quarter.
  • Jane Street sold 52,080 SIGA Technologies shares in Q2 2026, an estimated $233K.
  • Jane Street first reported a position in SIGA Technologies in Q2 2013 and held it in 23 quarters.
  • Jane Street's SIGA Technologies position peaked at $1.43M in Q2 2022.
  • 160 funds tracked by Wall St. Rank held SIGA Technologies as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.