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Sherbrooke Park Advisers’s Iridium Communications IRDM Stock Holding History

Sherbrooke Park Advisers’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
2025
Q4 		$174K Sell
10,006
-79,334
-89% -$1.4M 0.45% 99
2025
Q3 		$1.56M Buy
89,340
+73,317
+458% +$1.81M 0.73% 5
2025
Q2 		$483K Buy
16,023
+2,909
+22% +$75.6K 0.21% 183
2025
Q1 		$358K Sell
13,114
-10,025
-43% -$294K 0.17% 235
2024
Q4 		$671K Buy
+23,139
New +$688K 0.21% 133
2024
Q2 		– Sell
-23,836
Closed -$624K – 1054
2024
Q1 		$624K Buy
+23,836
New +$775K 0.12% 294

Other funds holding IRDM

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
SHCM
Silver Heights Capital Management Toronto, Ontario, Canada $324M AUM 55.4% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
American Century Companies
American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return
AIM
ARK Investment Management St. Petersburg, Florida $15.4B AUM 50.29% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 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
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Sherbrooke Park Advisers's IRDM Position: Q4 2025 in Review

Sherbrooke Park Advisers reduced its Iridium Communications (IRDM) stake by 89% in Q4 2025, selling an estimated $1.4M and leaving 10,006 shares worth $174K. The position accounts for 0.45% of the portfolio, ranked #99.

Sherbrooke Park Advisers first reported a position in IRDM in Q1 2024 and has held it in 6 quarters since. The position peaked at $1.56M in Q3 2025. 325 funds tracked by Wall St. Rank hold IRDM as of Q4 2025.

  • Sherbrooke Park Advisers held 10,006 shares of Iridium Communications worth $174K as of Q4 2025.
  • Sherbrooke Park Advisers sold 79,334 Iridium Communications shares in Q4 2025, an estimated $1.4M.
  • Iridium Communications made up 0.45% of Sherbrooke Park Advisers's portfolio in Q4 2025, its #99 holding.
  • Sherbrooke Park Advisers first reported a position in Iridium Communications in Q1 2024 and has held it in 6 quarters since.
  • Sherbrooke Park Advisers's Iridium Communications position peaked at $1.56M in Q3 2025.
  • 325 funds tracked by Wall St. Rank held Iridium Communications as of Q4 2025.

Based on Sherbrooke Park Advisers's 13F filing for Q4 2025, filed 17 Feb 2026.