Tudor Investment Corp’s SIGA Technologies SIGA Stock Holding History

Tudor Investment Corp’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	$136K	Buy	+37,237	New	+$167K	﹤0.01%	3385
2025 Q3	–	Sell	-36,576	Closed	-$238K	–	3832
2025 Q2	$238K	Buy	+36,576	New	+$219K	﹤0.01%	3010
2022 Q3	–	Sell	-31,870	Closed	-$369K	–	2663
2022 Q2	$369K	Buy	+31,870	New	+$287K	0.01%	1435
2021 Q3	–	Sell	-37,962	Closed	-$238K	–	2765
2021 Q2	$238K	Sell	37,962 -40,737	-52%	-$280K	﹤0.01%	1429
2021 Q1	$512K	Buy	78,699 +19,910	+34%	+$135K	0.01%	1131
2020 Q4	$427K	Sell	58,789 -15,647	-21%	-$110K	0.01%	1012
2020 Q3	$511K	Buy	74,436 +36,529	+96%	+$248K	0.02%	812
2020 Q2	$224K	Buy	+37,907	New	+$216K	0.01%	983

Other funds holding SIGA

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return

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 Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Tudor Investment Corp's SIGA Position: Q2 2026 in Review

Tudor Investment Corp opened a new position in SIGA Technologies (SIGA) in Q2 2026: 37,237 shares worth $136K. The stake represents ﹤0.01% of the portfolio and ranks #3385 among its holdings. This is a return to the name: Tudor Investment Corp previously reported a position in SIGA as recently as Q2 2025.

Tudor Investment Corp first reported a position in SIGA in Q2 2020 and has held it in 8 quarters since. The position peaked at $512K in Q1 2021. 161 funds tracked by Wall St. Rank hold SIGA as of Q2 2026.

Tudor Investment Corp held 37,237 shares of SIGA Technologies worth $136K as of Q2 2026.
SIGA Technologies was a new Tudor Investment Corp position in Q2 2026.
SIGA Technologies made up ﹤0.01% of Tudor Investment Corp's portfolio in Q2 2026, its #3385 holding.
Tudor Investment Corp first reported a position in SIGA Technologies in Q2 2020 and has held it in 8 quarters since.
Tudor Investment Corp's SIGA Technologies position peaked at $512K in Q1 2021.
161 funds tracked by Wall St. Rank held SIGA Technologies as of Q2 2026.

Based on Tudor Investment Corp's 13F filing for Q2 2026, filed 14 Aug 2026.