Campbell & Co Investment Adviser’s Iridium Communications IRDM Stock Holding History

Campbell & Co Investment Adviser’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 Q1	–	Sell	-19,196	Closed	-$334K	–	1230
2025 Q4	$334K	Sell	19,196 -12,507	-39%	-$221K	0.02%	950
2025 Q3	$554K	Buy	+31,703	New	+$783K	0.04%	687
2025 Q2	–	Sell	-38,048	Closed	-$1.04M	–	1283
2025 Q1	$1.04M	Buy	+38,048	New	+$1.12M	0.08%	413
2024 Q3	–	Sell	-40,316	Closed	-$1.07M	–	1215
2024 Q2	$1.07M	Sell	40,316 -28,377	-41%	-$799K	0.09%	336
2024 Q1	$1.8M	Buy	+68,693	New	+$2.23M	0.15%	174
2023 Q4	–	Sell	-40,626	Closed	-$1.85M	–	1206
2023 Q3	$1.85M	Buy	+40,626	New	+$2.1M	0.22%	106
2021 Q4	–	Sell	-7,250	Closed	-$289K	–	711
2021 Q3	$289K	Buy	+7,250	New	+$304K	0.09%	382
2021 Q2	–	Sell	-8,708	Closed	-$359K	–	611
2021 Q1	$359K	Buy	+8,708	New	+$381K	0.22%	177

Other funds holding IRDM

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

SHCM

Silver Heights Capital Management Toronto, Ontario, Canada $260M AUM 6.93% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

GAM

Gotham Asset Management New York $32.7B AUM 27.65% 1-Year Est. Return

AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

Campbell & Co Investment Adviser's IRDM Position: Q1 2026 in Review

Campbell & Co Investment Adviser sold out of Iridium Communications (IRDM) in Q1 2026, closing a stake of 19,196 shares — an estimated $334K sold.

Campbell & Co Investment Adviser first reported a position in IRDM in Q1 2021 and held it in 8 quarters. The position peaked at $1.85M in Q3 2023. 379 funds tracked by Wall St. Rank hold IRDM as of Q1 2026.

Campbell & Co Investment Adviser reported no remaining Iridium Communications position as of Q1 2026 after selling out during the quarter.
Campbell & Co Investment Adviser sold 19,196 Iridium Communications shares in Q1 2026, an estimated $334K.
Campbell & Co Investment Adviser first reported a position in Iridium Communications in Q1 2021 and held it in 8 quarters.
Campbell & Co Investment Adviser's Iridium Communications position peaked at $1.85M in Q3 2023.
379 funds tracked by Wall St. Rank held Iridium Communications as of Q1 2026.

Based on Campbell & Co Investment Adviser's 13F filing for Q1 2026, filed 15 May 2026.