Holocene Advisors
IRDM icon

Holocene Advisors’s Iridium Communications IRDM Stock Holding History

Holocene Advisors’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 		– Sell
-149,354
Closed -$4.14M – 906
2026
Q1 		$4.14M Buy
149,354
+8,219
+6% +$185K 0.01% 442
2025
Q4 		$2.45M Buy
141,135
+4,357
+3% +$77K 0.01% 478
2025
Q3 		$2.39M Buy
136,778
+76,499
+127% +$1.89M 0.01% 502
2025
Q2 		$1.82M Sell
60,279
-9,279
-13% -$241K ﹤0.01% 580
2025
Q1 		$1.9M Sell
69,558
-56,872
-45% -$1.67M 0.01% 548
2024
Q4 		$3.67M Buy
126,430
+2,295
+2% +$68.3K 0.01% 452
2024
Q3 		$3.78M Buy
124,135
+45,085
+57% +$1.23M 0.02% 423
2024
Q2 		$2.1M Sell
79,050
-84,250
-52% -$2.37M 0.01% 508
2024
Q1 		$4.27M Buy
+163,300
New +$5.31M 0.02% 430
2022
Q2 		– Sell
-33,655
Closed -$1.36M – 910
2022
Q1 		$1.36M Buy
+33,655
New +$1.27M 0.01% 627

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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

Holocene Advisors's IRDM Position: Q2 2026 in Review

Holocene Advisors sold out of Iridium Communications (IRDM) in Q2 2026, closing a stake of 149,354 shares — an estimated $4.14M sold.

Holocene Advisors first reported a position in IRDM in Q1 2022 and held it in 10 quarters. The position peaked at $4.27M in Q1 2024. 483 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

  • Holocene Advisors reported no remaining Iridium Communications position as of Q2 2026 after selling out during the quarter.
  • Holocene Advisors sold 149,354 Iridium Communications shares in Q2 2026, an estimated $4.14M.
  • Holocene Advisors first reported a position in Iridium Communications in Q1 2022 and held it in 10 quarters.
  • Holocene Advisors's Iridium Communications position peaked at $4.27M in Q1 2024.
  • 483 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Holocene Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.