PCM
IRDM icon

Prelude Capital Management’s Iridium Communications IRDM Stock Holding History

Prelude 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
2025
Q4 		– Sell
-14,455
Closed -$252K – 1424
2025
Q3 		$252K Buy
+14,455
New +$357K 0.02% 819
2025
Q1 		– Sell
-12,821
Closed -$372K – 1363
2024
Q4 		$372K Buy
+12,821
New +$381K 0.02% 706
2013
Q3 		– Sell
-3,212
Closed -$25K – 1775
2013
Q2 		$25K Buy
+3,212
New +$22.6K 0.01% 879

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

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

Prelude Capital Management sold out of Iridium Communications (IRDM) in Q4 2025, closing a stake of 14,455 shares — an estimated $252K sold.

Prelude Capital Management first reported a position in IRDM in Q2 2013 and held it in 3 quarters. The position peaked at $372K in Q4 2024. 325 funds tracked by Wall St. Rank hold IRDM as of Q4 2025.

  • Prelude Capital Management reported no remaining Iridium Communications position as of Q4 2025 after selling out during the quarter.
  • Prelude Capital Management sold 14,455 Iridium Communications shares in Q4 2025, an estimated $252K.
  • Prelude Capital Management first reported a position in Iridium Communications in Q2 2013 and held it in 3 quarters.
  • Prelude Capital Management's Iridium Communications position peaked at $372K in Q4 2024.
  • 325 funds tracked by Wall St. Rank held Iridium Communications as of Q4 2025.

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