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Graham Capital Management’s Iridium Communications IRDM Stock Holding History

Graham Capital 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
2018
Q2 		– Sell
-250,000
Closed -$2.81M – 128
2018
Q1 		$2.81M Buy
+250,000
New +$2.99M 0.15% 49

Other funds holding IRDM

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Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $260M AUM 6.93% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
GAM
Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Graham Capital Management's IRDM Position: Q4 2025 in Review

Graham Capital Management sold out of Iridium Communications (IRDM) in Q4 2025, closing a stake of 41,369 shares — an estimated $722K sold.

Graham Capital Management first reported a position in IRDM in Q1 2022 and held it in 11 quarters. The position peaked at $1.76M in Q3 2024. 325 funds tracked by Wall St. Rank hold IRDM as of Q4 2025.

  • Graham Capital Management reported no remaining Iridium Communications position as of Q4 2025 after selling out during the quarter.
  • Graham Capital Management sold 41,369 Iridium Communications shares in Q4 2025, an estimated $722K.
  • Graham Capital Management first reported a position in Iridium Communications in Q1 2022 and held it in 11 quarters.
  • Graham Capital Management's Iridium Communications position peaked at $1.76M in Q3 2024.
  • 325 funds tracked by Wall St. Rank held Iridium Communications as of Q4 2025.

Based on Graham Capital Management's 13F filing for Q4 2025, filed 17 Feb 2026.