Acadian Asset Management’s Iridium Communications IRDM Stock Holding History

Acadian Asset 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
2026 Q2	$2.04M	Buy	37,185 +12,250	+49%	+$524K	﹤0.01%	1072
2026 Q1	$689K	Sell	24,935 -145,426	-85%	-$3.27M	﹤0.01%	1272
2025 Q4	$2.96M	Buy	+170,361	New	+$3.01M	﹤0.01%	809
2025 Q3	–	Sell	-300,714	Closed	-$9.06M	–	1913
2025 Q2	$9.06M	Buy	300,714 +125,896	+72%	+$3.27M	0.02%	452
2025 Q1	$4.77M	Buy	174,818 +116,880	+202%	+$3.43M	0.01%	513
2024 Q4	$1.68M	Sell	57,938 -44,561	-43%	-$1.33M	﹤0.01%	809
2024 Q3	$3.12M	Buy	102,499 +47,324	+86%	+$1.29M	0.01%	621
2024 Q2	$1.47M	Buy	55,175 +54,039	+4,757%	+$1.52M	﹤0.01%	872
2024 Q1	$29K	Buy	+1,136	New	+$36.9K	﹤0.01%	1440
2023 Q4	–	Sell	-787	Closed	-$35K	–	1738
2023 Q3	$35K	Sell	787 -13,151	-94%	-$681K	﹤0.01%	1465
2023 Q2	$863K	Buy	+13,938	New	+$862K	﹤0.01%	917
2022 Q3	–	Sell	-3,407	Closed	-$128K	–	1748
2022 Q2	$128K	Buy	+3,407	New	+$127K	﹤0.01%	1303
2021 Q2	–	Sell	-720	Closed	-$30K	–	2101
2021 Q1	$30K	Hold	720	–	–	﹤0.01%	1915
2020 Q4	$28K	Buy	+720	New	+$22.6K	﹤0.01%	2078
2018 Q1	–	Sell	-85,588	Closed	-$1.01M	–	1746
2017 Q4	$1.01M	Buy	+85,588	New	+$989K	﹤0.01%	690
2017 Q3	–	Sell	-101,566	Closed	-$1.12M	–	1458
2017 Q2	$1.12M	Buy	+101,566	New	+$1.06M	0.01%	683

Other funds holding IRDM

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

American Century Companies Kansas City, Missouri $226B AUM 44.75% 1-Year Est. Return

State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return

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 Austin, Texas $552B AUM 44.19% 1-Year Est. Return

VanEck Associates New York $164B AUM 112.45% 1-Year Est. Return

Acadian Asset Management's IRDM Position: Q2 2026 in Review

Acadian Asset Management increased its Iridium Communications (IRDM) stake by 49% in Q2 2026, buying an estimated $524K and bringing the position to 37,185 shares worth $2.04M. The position accounts for ﹤0.01% of the portfolio, ranked #1072.

Acadian Asset Management first reported a position in IRDM in Q2 2017 and has held it in 16 quarters since. The position peaked at $9.06M in Q2 2025. 483 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

Acadian Asset Management held 37,185 shares of Iridium Communications worth $2.04M as of Q2 2026.
Acadian Asset Management bought 12,250 Iridium Communications shares in Q2 2026, an estimated $524K.
Iridium Communications made up ﹤0.01% of Acadian Asset Management's portfolio in Q2 2026, its #1072 holding.
Acadian Asset Management first reported a position in Iridium Communications in Q2 2017 and has held it in 16 quarters since.
Acadian Asset Management's Iridium Communications position peaked at $9.06M in Q2 2025.
483 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Acadian Asset Management's 13F filing for Q2 2026, filed 13 Aug 2026.