AQR Capital Management
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AQR Capital Management’s SIGA Technologies SIGA Stock Holding History

AQR Capital Management’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 		$6.53M Buy
1,219,677
+346,882
+40% +$2.16M ﹤0.01% 1577
2025
Q4 		$5.33M Buy
872,795
+524,714
+151% +$3.73M ﹤0.01% 1539
2025
Q3 		$3.18M Buy
348,081
+328,725
+1,698% +$2.63M ﹤0.01% 1711
2025
Q2 		$126K Buy
+19,356
New +$116K ﹤0.01% 3139
2024
Q4 		– Sell
-13,328
Closed -$90K – 2941
2024
Q3 		$90K Buy
13,328
+337
+3% +$2.94K ﹤0.01% 2664
2024
Q2 		$98.6K Buy
+12,991
New +$106K ﹤0.01% 2495
2023
Q2 		– Sell
-14,743
Closed -$84.8K – 2270
2023
Q1 		$84.8K Sell
14,743
-1,050
-7% -$7.01K ﹤0.01% 2126
2022
Q4 		$116K Sell
15,793
-850
-5% -$7.45K ﹤0.01% 2130
2022
Q3 		$171K Buy
16,643
+4,546
+38% +$73K ﹤0.01% 2066
2022
Q2 		$140K Buy
+12,097
New +$109K ﹤0.01% 2048

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
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
Hotchkis & Wiley Capital Management
Hotchkis & Wiley Capital Management Los Angeles, California $32.4B AUM 17.21% 1-Year Est. Return

AQR Capital Management's SIGA Position: Q1 2026 in Review

AQR Capital Management increased its SIGA Technologies (SIGA) stake by 40% in Q1 2026, buying an estimated $2.16M and bringing the position to 1,219,677 shares worth $6.53M. The position accounts for ﹤0.01% of the portfolio, ranked #1577.

AQR Capital Management first reported a position in SIGA in Q2 2022 and has held it in 10 quarters since. 183 funds tracked by Wall St. Rank hold SIGA as of Q1 2026.

  • AQR Capital Management held 1,219,677 shares of SIGA Technologies worth $6.53M as of Q1 2026.
  • AQR Capital Management bought 346,882 SIGA Technologies shares in Q1 2026, an estimated $2.16M.
  • SIGA Technologies made up ﹤0.01% of AQR Capital Management's portfolio in Q1 2026, its #1577 holding.
  • AQR Capital Management first reported a position in SIGA Technologies in Q2 2022 and has held it in 10 quarters since.
  • 183 funds tracked by Wall St. Rank held SIGA Technologies as of Q1 2026.

Based on AQR Capital Management's 13F filing for Q1 2026, filed 15 May 2026.