DS
IRDM icon

David Shaw’s Iridium Communications IRDM Stock Holding History

David Shaw’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
2024
Q4 		– Sell
-47,300
Closed -$1.44M – 4606
2024
Q3 		$1.44M Hold
47,300
– – ﹤0.01% 2972
2024
Q2 		$1.26M Buy
47,300
+27,300
+137% +$769K ﹤0.01% 3031
2024
Q1 		$523K Buy
+20,000
New +$651K ﹤0.01% 3465

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

David Shaw's IRDM Position: Q2 2026 in Review

David Shaw reduced its Iridium Communications (IRDM) stake by 53% in Q2 2026, selling an estimated $1.89M and leaving 39,103 shares worth $2.14M. The position accounts for ﹤0.01% of the portfolio, ranked #3139.

David Shaw first reported a position in IRDM in Q4 2015 and has held it in 38 quarters since. The position peaked at $54.3M in Q2 2023. 478 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

  • David Shaw held 39,103 shares of Iridium Communications worth $2.14M as of Q2 2026.
  • David Shaw sold 44,230 Iridium Communications shares in Q2 2026, an estimated $1.89M.
  • Iridium Communications made up ﹤0.01% of David Shaw's portfolio in Q2 2026, its #3139 holding.
  • David Shaw first reported a position in Iridium Communications in Q4 2015 and has held it in 38 quarters since.
  • David Shaw's Iridium Communications position peaked at $54.3M in Q2 2023.
  • 478 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on D.E. Shaw & Co's 13F filing for Q2 2026, filed 14 Aug 2026.