Millennium Management
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Millennium Management’s SIGA Technologies SIGA Stock Holding History

Millennium 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
2024
Q1 		– Sell
-100,000
Closed -$560K – 6604
2023
Q4 		$560K Buy
+100,000
New +$536K ﹤0.01% 4573

Other funds holding SIGA

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Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
AC
AltraVue Capital Bellevue, Washington $1.39B AUM 53.77% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
Geode Capital Management
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
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

Millennium Management's SIGA Position: Q2 2026 in Review

Millennium Management increased its SIGA Technologies (SIGA) stake by 24% in Q2 2026, buying an estimated $507K and bringing the position to 579,599 shares worth $2.11M. The position accounts for ﹤0.01% of the portfolio, ranked #3774.

Millennium Management first reported a position in SIGA in Q2 2013 and has held it in 34 quarters since. The position peaked at $3.56M in Q3 2024. 161 funds tracked by Wall St. Rank hold SIGA as of Q2 2026.

  • Millennium Management held 579,599 shares of SIGA Technologies worth $2.11M as of Q2 2026.
  • Millennium Management bought 113,275 SIGA Technologies shares in Q2 2026, an estimated $507K.
  • SIGA Technologies made up ﹤0.01% of Millennium Management's portfolio in Q2 2026, its #3774 holding.
  • Millennium Management first reported a position in SIGA Technologies in Q2 2013 and has held it in 34 quarters since.
  • Millennium Management's SIGA Technologies position peaked at $3.56M in Q3 2024.
  • 161 funds tracked by Wall St. Rank held SIGA Technologies as of Q2 2026.

Based on Millennium Management's 13F filing for Q2 2026, filed 14 Aug 2026.