Brown Brothers Harriman & Co’s Iridium Communications IRDM Stock Holding History

Brown Brothers Harriman & Co’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	$137K	Hold	2,500	–	–	﹤0.01%	932
2026 Q1	$69.3K	Hold	2,500	–	–	﹤0.01%	999
2025 Q4	$43.5K	Hold	2,500	–	–	﹤0.01%	1062
2025 Q3	$43.6K	Sell	2,500 -69	-3%	-$1.71K	﹤0.01%	1028
2025 Q2	$77.5K	Buy	2,569 +69	+3%	+$1.79K	﹤0.01%	845
2025 Q1	$68.3K	Hold	2,500	–	–	﹤0.01%	775
2024 Q4	$72.5K	Hold	2,500	–	–	﹤0.01%	799
2024 Q3	$76.1K	Hold	2,500	–	–	﹤0.01%	738
2024 Q2	$66.5K	Hold	2,500	–	–	﹤0.01%	720
2024 Q1	$65.4K	Hold	2,500	–	–	﹤0.01%	717
2023 Q4	$103K	Hold	2,500	–	–	﹤0.01%	613
2023 Q3	$114K	Hold	2,500	–	–	﹤0.01%	572
2023 Q2	$155K	Hold	2,500	–	–	﹤0.01%	519
2023 Q1	$155K	Hold	2,500	–	–	﹤0.01%	530
2022 Q4	$129K	Hold	2,500	–	–	﹤0.01%	543
2022 Q3	$111K	Hold	2,500	–	–	﹤0.01%	572
2022 Q2	$94K	Hold	2,500	–	–	﹤0.01%	592
2022 Q1	$101K	Hold	2,500	–	–	﹤0.01%	630
2021 Q4	$103K	Hold	2,500	–	–	﹤0.01%	579
2021 Q3	$100K	Hold	2,500	–	–	﹤0.01%	561
2021 Q2	$100K	Hold	2,500	–	–	﹤0.01%	554
2021 Q1	$103K	Sell	2,500 -100	-4%	-$4.38K	﹤0.01%	516
2020 Q4	$102K	Buy	2,600 +100	+4%	+$3.14K	﹤0.01%	546
2020 Q3	$64K	Hold	2,500	–	–	﹤0.01%	542
2020 Q2	$64K	Hold	2,500	–	–	﹤0.01%	545
2020 Q1	$56K	Hold	2,500	–	–	﹤0.01%	522
2019 Q4	$62K	Hold	2,500	–	–	﹤0.01%	629
2019 Q3	$53K	Hold	2,500	–	–	﹤0.01%	635
2019 Q2	$58K	Hold	2,500	–	–	﹤0.01%	565
2019 Q1	$66K	Hold	2,500	–	–	﹤0.01%	541
2018 Q4	$46K	Hold	2,500	–	–	﹤0.01%	524
2018 Q3	$56K	Hold	2,500	–	–	﹤0.01%	502
2018 Q2	$40K	Buy	+2,500	New	+$34K	﹤0.01%	523
2018 Q1	–	Sell	-20,000	Closed	-$236K	–	962
2017 Q4	$236K	Hold	20,000	–	–	﹤0.01%	324
2017 Q3	$206K	Hold	20,000	–	–	﹤0.01%	319
2017 Q2	$221K	Hold	20,000	–	–	﹤0.01%	314
2017 Q1	$193K	Hold	20,000	–	–	﹤0.01%	336
2016 Q4	$192K	Hold	20,000	–	–	﹤0.01%	308
2016 Q3	$162K	Hold	20,000	–	–	﹤0.01%	326
2016 Q2	$178K	Hold	20,000	–	–	﹤0.01%	315
2016 Q1	$157K	Hold	20,000	–	–	﹤0.01%	328
2015 Q4	$168K	Hold	20,000	–	–	﹤0.01%	339
2015 Q3	$123K	Hold	20,000	–	–	﹤0.01%	372
2015 Q2	$182K	Hold	20,000	–	–	﹤0.01%	344
2015 Q1	$194K	Hold	20,000	–	–	﹤0.01%	342
2014 Q4	$195K	Hold	20,000	–	–	﹤0.01%	353
2014 Q3	$177K	Hold	20,000	–	–	﹤0.01%	364
2014 Q2	$169K	Buy	+20,000	New	+$150K	﹤0.01%	371

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

Brown Brothers Harriman & Co's IRDM Position: Q2 2026 in Review

Brown Brothers Harriman & Co held its Iridium Communications (IRDM) position steady in Q2 2026 at 2,500 shares worth $137K. The position accounts for ﹤0.01% of the portfolio, ranked #932.

Brown Brothers Harriman & Co first reported a position in IRDM in Q2 2014 and has held it in 48 quarters since. The position peaked at $236K in Q4 2017. 483 funds tracked by Wall St. Rank hold IRDM as of Q2 2026.

Brown Brothers Harriman & Co held 2,500 shares of Iridium Communications worth $137K as of Q2 2026.
Brown Brothers Harriman & Co left its Iridium Communications share count unchanged in Q2 2026.
Iridium Communications made up ﹤0.01% of Brown Brothers Harriman & Co's portfolio in Q2 2026, its #932 holding.
Brown Brothers Harriman & Co first reported a position in Iridium Communications in Q2 2014 and has held it in 48 quarters since.
Brown Brothers Harriman & Co's Iridium Communications position peaked at $236K in Q4 2017.
483 funds tracked by Wall St. Rank held Iridium Communications as of Q2 2026.

Based on Brown Brothers Harriman & Co's 13F filing for Q2 2026, filed 12 Aug 2026.