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Tower Research Capital (TRC)’s SIGA Technologies SIGA Stock Holding History

Tower Research Capital (TRC)’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
Q1 		$13.1K Sell
2,444
-3,060
-56% -$19.1K ﹤0.01% 3758
2025
Q4 		$33.6K Buy
5,504
+2,619
+91% +$18.6K ﹤0.01% 2722
2025
Q3 		$26.4K Sell
2,885
-3,932
-58% -$31.4K ﹤0.01% 3060
2025
Q2 		$44.4K Buy
6,817
+3,669
+117% +$22K ﹤0.01% 3073
2025
Q1 		$17.3K Buy
3,148
+2,545
+422% +$15.1K ﹤0.01% 3116
2024
Q4 		$3.62K Sell
603
-5,136
-89% -$34.3K ﹤0.01% 4623
2024
Q3 		$38.7K Sell
5,739
-640
-10% -$5.59K ﹤0.01% 2868
2024
Q2 		$48.4K Buy
6,379
+4,708
+282% +$38.3K ﹤0.01% 3124
2024
Q1 		$14.3K Sell
1,671
-6,284
-79% -$35.9K ﹤0.01% 3317
2023
Q4 		$44.5K Buy
7,955
+5,309
+201% +$28.4K ﹤0.01% 3209
2023
Q3 		$13.9K Sell
2,646
-7,524
-74% -$37.1K ﹤0.01% 3740
2023
Q2 		$51.4K Buy
10,170
+8,979
+754% +$51K ﹤0.01% 2562
2023
Q1 		$7K Sell
1,191
-3,071
-72% -$20.5K ﹤0.01% 4768
2022
Q4 		$31K Sell
4,262
-31,250
-88% -$274K ﹤0.01% 2722
2022
Q3 		$366K Buy
35,512
+33,828
+2,009% +$544K 0.01% 1392
2022
Q2 		$20K Sell
1,684
-46,528
-97% -$419K ﹤0.01% 3806
2022
Q1 		$342K Buy
48,212
+32,823
+213% +$220K ﹤0.01% 1392
2021
Q4 		$116K Buy
15,389
+12,502
+433% +$95.2K ﹤0.01% 2139
2021
Q3 		$22K Sell
2,887
-1,478
-34% -$9.47K ﹤0.01% 3644
2021
Q2 		$28K Sell
4,365
-183
-4% -$1.26K ﹤0.01% 3575
2021
Q1 		$30K Sell
4,548
-2,973
-40% -$20.2K ﹤0.01% 3568
2020
Q4 		$55K Sell
7,521
-44,413
-86% -$313K ﹤0.01% 3030
2020
Q3 		$357K Buy
51,934
+38,576
+289% +$262K ﹤0.01% 2026
2020
Q2 		$79K Buy
+13,358
New +$76.3K ﹤0.01% 2661
2020
Q1 		– Sell
-6,675
Closed -$32K – 3812
2019
Q4 		$32K Sell
6,675
-5,929
-47% -$30.2K ﹤0.01% 1627
2019
Q3 		$64K Buy
+12,604
New +$68K ﹤0.01% 1621
2019
Q2 		– Sell
-205
Closed -$1K – 4225
2019
Q1 		$1K Sell
205
-417
-67% -$2.8K ﹤0.01% 3617
2018
Q4 		$5K Sell
622
-630
-50% -$3.6K ﹤0.01% 2933
2018
Q3 		$9K Buy
+1,252
New +$9.18K ﹤0.01% 2834
2015
Q1 		– Sell
-508
Closed -$1K – 4868
2014
Q4 		$1K Sell
508
-13,703
-96% -$20.7K ﹤0.01% 3709
2014
Q3 		$20K Buy
14,211
+6,115
+76% +$12K ﹤0.01% 2304
2014
Q2 		$23K Buy
+8,096
New +$22.7K ﹤0.01% 1767
2014
Q1 		– Sell
-1,047
Closed -$3K – 4871
2013
Q4 		$3K Buy
+1,047
New +$3.53K ﹤0.01% 3870
2013
Q3 		– Sell
-858
Closed -$2K – 4809
2013
Q2 		$2K Buy
+858
New +$2.88K ﹤0.01% 3511

Other funds holding SIGA

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
AC
AltraVue Capital Bellevue, Washington $1.16B AUM 46.45% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
FWSM
First Wilshire Securities Management Pasadena, California $444M AUM 42.88% 1-Year Est. Return

Tower Research Capital (TRC)'s SIGA Position: Q1 2026 in Review

Tower Research Capital (TRC) reduced its SIGA Technologies (SIGA) stake by 56% in Q1 2026, selling an estimated $19.1K and leaving 2,444 shares worth $13.1K. The position accounts for ﹤0.01% of the portfolio, ranked #3758.

Tower Research Capital (TRC) first reported a position in SIGA in Q2 2013 and has held it in 34 quarters since. The position peaked at $366K in Q3 2022. 183 funds tracked by Wall St. Rank hold SIGA as of Q1 2026.

  • Tower Research Capital (TRC) held 2,444 shares of SIGA Technologies worth $13.1K as of Q1 2026.
  • Tower Research Capital (TRC) sold 3,060 SIGA Technologies shares in Q1 2026, an estimated $19.1K.
  • SIGA Technologies made up ﹤0.01% of Tower Research Capital (TRC)'s portfolio in Q1 2026, its #3758 holding.
  • Tower Research Capital (TRC) first reported a position in SIGA Technologies in Q2 2013 and has held it in 34 quarters since.
  • Tower Research Capital (TRC)'s SIGA Technologies position peaked at $366K in Q3 2022.
  • 183 funds tracked by Wall St. Rank held SIGA Technologies as of Q1 2026.

Based on Tower Research Capital (TRC)'s 13F filing for Q1 2026, filed 15 May 2026.