Two Sigma Investments’s SIGA Technologies SIGA Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
$2.32M Buy
433,661
+423,261
+4,070% +$2.64M ﹤0.01% 2643
2025
Q4
$63.5K Buy
+10,400
New +$74K ﹤0.01% 3909
2025
Q3
Sell
-113,735
Closed -$742K 3903
2025
Q2
$742K Buy
113,735
+85,993
+310% +$516K ﹤0.01% 2401
2025
Q1
$152K Buy
+27,742
New +$164K ﹤0.01% 2901
2023
Q2
Sell
-80,844
Closed -$465K 3238
2023
Q1
$465K Sell
80,844
-688,568
-89% -$4.6M ﹤0.01% 2233
2022
Q4
$5.66M Sell
769,412
-224,629
-23% -$1.97M 0.02% 798
2022
Q3
$10.2M Buy
994,041
+325,837
+49% +$5.24M 0.03% 484
2022
Q2
$7.74M Buy
+668,204
New +$6.02M 0.03% 599
2021
Q2
Sell
-30,227
Closed -$196K 4510
2021
Q1
$196K Sell
30,227
-78,886
-72% -$535K ﹤0.01% 3634
2020
Q4
$793K Sell
109,113
-66,317
-38% -$467K ﹤0.01% 2182
2020
Q3
$1.21M Buy
175,430
+80,379
+85% +$546K ﹤0.01% 1635
2020
Q2
$562K Buy
+95,051
New +$543K ﹤0.01% 1926
2014
Q3
Sell
-11,633
Closed -$33K 2025
2014
Q2
$33K Buy
+11,633
New +$32.6K ﹤0.01% 2100
2014
Q1
Sell
-23,223
Closed -$76K 2222
2013
Q4
$76K Buy
+23,223
New +$78.4K ﹤0.01% 2102

Other funds holding SIGA

Two Sigma Investments's SIGA Position: Q1 2026 in Review

Two Sigma Investments increased its SIGA Technologies (SIGA) stake by 4,070% in Q1 2026, buying an estimated $2.64M and bringing the position to 433,661 shares worth $2.32M. The position accounts for ﹤0.01% of the portfolio, ranked #2643.

Two Sigma Investments first reported a position in SIGA in Q4 2013 and has held it in 14 quarters since. The position peaked at $10.2M in Q3 2022. 183 funds tracked by Wall St. Rank hold SIGA as of Q1 2026.

  • Two Sigma Investments held 433,661 shares of SIGA Technologies worth $2.32M as of Q1 2026.
  • Two Sigma Investments bought 423,261 SIGA Technologies shares in Q1 2026, an estimated $2.64M.
  • SIGA Technologies made up ﹤0.01% of Two Sigma Investments's portfolio in Q1 2026, its #2643 holding.
  • Two Sigma Investments first reported a position in SIGA Technologies in Q4 2013 and has held it in 14 quarters since.
  • Two Sigma Investments's SIGA Technologies position peaked at $10.2M in Q3 2022.
  • 183 funds tracked by Wall St. Rank held SIGA Technologies as of Q1 2026.

Based on Two Sigma Investments's 13F filing for Q1 2026, filed 15 May 2026.