Group One Trading
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Group One Trading’s SIGA Technologies SIGA Stock Holding History

Group One Trading’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 		$11.2K Sell
2,100
-6,600
-76% -$41.2K ﹤0.01% 6313
2025
Q4 		$53.2K Sell
8,700
-1,000
-10% -$7.11K ﹤0.01% 5555
2025
Q3 		$88.8K Sell
9,700
-1,000
-9% -$7.99K ﹤0.01% 5453
2025
Q2 		$69.8K Sell
10,700
-11,000
-51% -$66K ﹤0.01% 5279
2025
Q1 		$119K Sell
21,700
-151,700
-87% -$898K ﹤0.01% 4458
2024
Q4 		$1.04M Sell
173,400
-700
-0.4% -$4.68K ﹤0.01% 2545
2024
Q3 		$1.18M Buy
174,100
+156,000
+862% +$1.36M ﹤0.01% 2157
2024
Q2 		$137K Sell
18,100
-43,900
-71% -$357K ﹤0.01% 3700
2024
Q1 		$531K Sell
62,000
-84,800
-58% -$484K ﹤0.01% 2666
2023
Q4 		$822K Buy
146,800
+45,400
+45% +$243K ﹤0.01% 2649
2023
Q3 		$532K Sell
101,400
-21,000
-17% -$104K ﹤0.01% 2848
2023
Q2 		$618K Buy
122,400
+27,000
+28% +$153K ﹤0.01% 2803
2023
Q1 		$549K Sell
95,400
-166,100
-64% -$1.11M ﹤0.01% 2687
2022
Q4 		$1.92M Sell
261,500
-51,900
-17% -$455K ﹤0.01% 1852
2022
Q3 		$3.23M Sell
313,400
-17,300
-5% -$278K 0.01% 1515
2022
Q2 		$3.83M Buy
330,700
+305,800
+1,228% +$2.76M 0.01% 1498
2022
Q1 		$177K Buy
24,900
+17,000
+215% +$114K ﹤0.01% 4924
2021
Q4 		$59K Sell
7,900
-33,600
-81% -$256K ﹤0.01% 6194
2021
Q3 		$307K Buy
41,500
+35,100
+548% +$225K ﹤0.01% 4724
2021
Q2 		$40K Sell
6,400
-8,300
-56% -$57K ﹤0.01% 6760
2021
Q1 		$96K Sell
14,700
-3,200
-18% -$21.7K ﹤0.01% 5700
2020
Q4 		$130K Sell
17,900
-2,100
-11% -$14.8K ﹤0.01% 4376
2020
Q3 		$137K Sell
20,000
-15,200
-43% -$103K ﹤0.01% 3953
2020
Q2 		$208K Sell
35,200
-27,200
-44% -$155K ﹤0.01% 3347
2020
Q1 		$298K Buy
62,400
+27,400
+78% +$133K ﹤0.01% 2431
2019
Q4 		$167K Buy
35,000
+9,100
+35% +$46.3K ﹤0.01% 3301
2019
Q3 		$133K Hold
25,900
– – ﹤0.01% 3365
2019
Q2 		$147K Buy
25,900
+900
+4% +$4.98K ﹤0.01% 3064
2019
Q1 		$150K Sell
25,000
-1,200
-5% -$8.05K ﹤0.01% 2900
2018
Q4 		$207K Sell
26,200
-21,000
-44% -$120K ﹤0.01% 2658
2018
Q3 		$325K Buy
+47,200
New +$346K ﹤0.01% 2640
2015
Q2 		– Sell
-33,000
Closed -$64K – 5141
2015
Q1 		$64K Buy
33,000
+3,400
+11% +$6.28K ﹤0.01% 3213
2014
Q4 		$43K Buy
29,600
+200
+0.7% +$303 ﹤0.01% 3477
2014
Q3 		$42K Buy
29,400
+18,100
+160% +$35.4K ﹤0.01% 3656
2014
Q2 		$32K Sell
11,300
-49,200
-81% -$138K ﹤0.01% 3848
2014
Q1 		$188K Buy
60,500
+20,300
+50% +$67.2K ﹤0.01% 2490
2013
Q4 		$131K Sell
40,200
-54,100
-57% -$183K ﹤0.01% 2807
2013
Q3 		$362K Buy
94,300
+56,800
+151% +$194K 0.01% 1890
2013
Q2 		$106K Buy
+37,500
New +$126K ﹤0.01% 2759

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

Group One Trading's SIGA Position: Q1 2026 in Review

Group One Trading reduced its SIGA Technologies (SIGA) stake by 12% in Q1 2026, selling an estimated $2.59K and leaving 3,180 shares worth $17K. The position accounts for ﹤0.01% of the portfolio, ranked #6060.

Group One Trading first reported a position in SIGA in Q2 2013 and has held it in 26 quarters since. The position peaked at $406K in Q3 2023. 183 funds tracked by Wall St. Rank hold SIGA as of Q1 2026.

  • Group One Trading held 3,180 shares of SIGA Technologies worth $17K as of Q1 2026.
  • Group One Trading sold 415 SIGA Technologies shares in Q1 2026, an estimated $2.59K.
  • SIGA Technologies made up ﹤0.01% of Group One Trading's portfolio in Q1 2026, its #6060 holding.
  • Group One Trading first reported a position in SIGA Technologies in Q2 2013 and has held it in 26 quarters since.
  • Group One Trading's SIGA Technologies position peaked at $406K in Q3 2023.
  • 183 funds tracked by Wall St. Rank held SIGA Technologies as of Q1 2026.

Based on Group One Trading's 13F filing for Q1 2026, filed 13 May 2026.