Millennium Management
IRDM icon

Millennium Management’s Iridium Communications IRDM Stock Holding History

Millennium Management’s Portfolio IRDM Stock Details IRDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$499K Buy
+9,100
New +$389K ﹤0.01% 4772
2021
Q2 		– Sell
-10,000
Closed -$413K – 6778
2021
Q1 		$413K Buy
+10,000
New +$438K ﹤0.01% 4980

Other funds holding IRDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $324M AUM 55.4% 1-Year Est. Return
GAM
Gotham Asset Management New York $43B AUM 34.97% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
VanEck Associates
VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return

Millennium Management's IRDM Position: Q2 2026 in Review

Millennium Management reduced its Iridium Communications (IRDM) stake by 69% in Q2 2026, selling an estimated $14.6M and leaving 153,205 shares worth $8.4M. The position accounts for ﹤0.01% of the portfolio, ranked #2470.

Millennium Management first reported a position in IRDM in Q3 2013 and has held it in 32 quarters since. The position peaked at $75.3M in Q2 2023. 482 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

  • Millennium Management held 153,205 shares of Iridium Communications worth $8.4M as of Q2 2026.
  • Millennium Management sold 341,457 Iridium Communications shares in Q2 2026, an estimated $14.6M.
  • Iridium Communications made up ﹤0.01% of Millennium Management's portfolio in Q2 2026, its #2470 holding.
  • Millennium Management first reported a position in Iridium Communications in Q3 2013 and has held it in 32 quarters since.
  • Millennium Management's Iridium Communications position peaked at $75.3M in Q2 2023.
  • 482 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

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