Sit Investment Associates’s Iridium Communications IRDM Stock Holding History

Sit Investment Associates’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	$1.47M	Sell	26,725 -41,275	-61%	-$1.76M	0.03%	330
2026 Q1	$1.89M	Hold	68,000	–	–	0.04%	302
2025 Q4	$1.18M	Hold	68,000	–	–	0.02%	359
2025 Q3	$1.19M	Buy	68,000 +48,100	+242%	+$1.19M	0.02%	357
2025 Q2	$600K	Hold	19,900	–	–	0.01%	404
2025 Q1	$544K	Hold	19,900	–	–	0.01%	405
2024 Q4	$577K	Sell	19,900 -47,300	-70%	-$1.41M	0.01%	413
2024 Q3	$2.05M	Hold	67,200	–	–	0.05%	308
2024 Q2	$1.79M	Hold	67,200	–	–	0.04%	306
2024 Q1	$1.76M	Sell	67,200 -24,500	-27%	-$797K	0.04%	314
2023 Q4	$3.77M	Buy	91,700 +37,275	+68%	+$1.48M	0.09%	234
2023 Q3	$2.48M	Buy	+54,425	New	+$2.82M	0.07%	266

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 $3.37T AUM 44.26% 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

Sit Investment Associates's IRDM Position: Q2 2026 in Review

Sit Investment Associates reduced its Iridium Communications (IRDM) stake by 61% in Q2 2026, selling an estimated $1.76M and leaving 26,725 shares worth $1.47M. The position accounts for 0.03% of the portfolio, ranked #330.

Sit Investment Associates first reported a position in IRDM in Q3 2023 and has held it in 12 quarters since. The position peaked at $3.77M in Q4 2023. 481 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

Sit Investment Associates held 26,725 shares of Iridium Communications worth $1.47M as of Q2 2026.
Sit Investment Associates sold 41,275 Iridium Communications shares in Q2 2026, an estimated $1.76M.
Iridium Communications made up 0.03% of Sit Investment Associates's portfolio in Q2 2026, its #330 holding.
Sit Investment Associates first reported a position in Iridium Communications in Q3 2023 and has held it in 12 quarters since.
Sit Investment Associates's Iridium Communications position peaked at $3.77M in Q4 2023.
481 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Sit Investment Associates's 13F filing for Q2 2026, filed 12 Aug 2026.