GAMCO Investors’s Iridium Communications IRDM Stock Holding History

GAMCO Investors’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
2025 Q3	–	Sell	-8,600	Closed	-$259K	–	1048
2025 Q2	$259K	Buy	+8,600	New	+$224K	﹤0.01%	964
2023 Q2	–	Sell	-5,800	Closed	-$359K	–	879
2023 Q1	$359K	Sell	5,800 -248,800	-98%	-$14.9M	﹤0.01%	730
2022 Q4	$13.1M	Sell	254,600 -44,000	-15%	-$2.21M	0.14%	179
2022 Q3	$13.2M	Sell	298,600 -6,000	-2%	-$260K	0.16%	174
2022 Q2	$11.4M	Sell	304,600 -6,000	-2%	-$224K	0.13%	207
2022 Q1	$12.5M	Sell	310,600 -1,000	-0.3%	-$37.7K	0.11%	215
2021 Q4	$12.9M	Sell	311,600 -9,000	-3%	-$364K	0.11%	219
2021 Q3	$12.8M	Sell	320,600 -40,100	-11%	-$1.68M	0.11%	214
2021 Q2	$14.4M	Sell	360,700 -6,000	-2%	-$233K	0.12%	207
2021 Q1	$15.1M	Sell	366,700 -221,000	-38%	-$9.67M	0.13%	196
2020 Q4	$23.1M	Sell	587,700 -49,600	-8%	-$1.56M	0.22%	139
2020 Q3	$16.3M	Hold	637,300	–	–	0.18%	160
2020 Q2	$16.2M	Buy	637,300 +15,000	+2%	+$352K	0.18%	158
2020 Q1	$13.9M	Hold	622,300	–	–	0.16%	172
2019 Q4	$15.3M	Hold	622,300	–	–	0.12%	200
2019 Q3	$13.2M	Buy	622,300 +1,300	+0.2%	+$31K	0.11%	210
2019 Q2	$14.4M	Sell	621,000 -3,000	-0.5%	-$74.7K	0.11%	211
2019 Q1	$16.5M	Hold	624,000	–	–	0.13%	199
2018 Q4	$11.5M	Sell	624,000 -8,000	-1%	-$164K	0.1%	220
2018 Q3	$14.2M	Sell	632,000 -20,151	-3%	-$391K	0.1%	225
2018 Q2	$10.5M	Hold	652,151	–	–	0.07%	256
2018 Q1	$7.34M	Buy	652,151 +4,000	+0.6%	+$47.9K	0.05%	300
2017 Q4	$7.65M	Sell	648,151 -2,000	-0.3%	-$23.1K	0.05%	301
2017 Q3	$6.7M	Sell	650,151 -2,000	-0.3%	-$20.7K	0.04%	323
2017 Q2	$7.21M	Sell	652,151 -10,800	-2%	-$113K	0.05%	314
2017 Q1	$6.4M	Buy	662,951 +592,258	+838%	+$5.65M	0.04%	332
2016 Q4	$679K	Sell	70,693 -3,000	-4%	-$26.8K	﹤0.01%	628
2016 Q3	$598K	Hold	73,693	–	–	﹤0.01%	647
2016 Q2	$654K	Sell	73,693 -24,700	-25%	-$203K	﹤0.01%	652
2016 Q1	$774K	Sell	98,393 -407	-0.4%	-$2.92K	0.01%	623
2015 Q4	$831K	Buy	98,800 +600	+0.6%	+$4.57K	0.01%	623
2015 Q3	$604K	Buy	98,200 +3,000	+3%	+$21.8K	﹤0.01%	663
2015 Q2	$865K	Buy	95,200 +14,200	+18%	+$146K	﹤0.01%	634
2015 Q1	$787K	Sell	81,000 -13,000	-14%	-$121K	﹤0.01%	658
2014 Q4	$917K	Hold	94,000	–	–	﹤0.01%	651
2014 Q3	$832K	Buy	94,000 +4,000	+4%	+$34.7K	﹤0.01%	670
2014 Q2	$761K	Hold	90,000	–	–	﹤0.01%	682
2014 Q1	$676K	Buy	90,000 +5,000	+6%	+$33.4K	﹤0.01%	668
2013 Q4	$531K	Buy	85,000 +5,000	+6%	+$30.2K	﹤0.01%	682
2013 Q3	$550K	Buy	80,000 +37,000	+86%	+$277K	﹤0.01%	684
2013 Q2	$334K	Buy	+43,000	New	+$302K	﹤0.01%	713

Other funds holding IRDM

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

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

AIM

ARK Investment Management St. Petersburg, Florida $12.9B AUM 64.92% 1-Year Est. Return

SHCM

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

Sumitomo Mitsui Trust Group Minato-Ku, Tokyo, Japan $154B AUM 29.96% 1-Year Est. Return

NAMA

Nikko Asset Management Americas New York $7.07B AUM 50.91% 1-Year Est. Return

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

Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

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

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

GAMCO Investors's IRDM Position: Q3 2025 in Review

GAMCO Investors sold out of Iridium Communications (IRDM) in Q3 2025, closing a stake of 8,600 shares — an estimated $259K sold.

GAMCO Investors first reported a position in IRDM in Q2 2013 and held it in 41 quarters. The position peaked at $23.1M in Q4 2020. 324 funds tracked by Wall St. Rank hold IRDM as of Q3 2025.

GAMCO Investors reported no remaining Iridium Communications position as of Q3 2025 after selling out during the quarter.
GAMCO Investors sold 8,600 Iridium Communications shares in Q3 2025, an estimated $259K.
GAMCO Investors first reported a position in Iridium Communications in Q2 2013 and held it in 41 quarters.
GAMCO Investors's Iridium Communications position peaked at $23.1M in Q4 2020.
324 funds tracked by Wall St. Rank held Iridium Communications as of Q3 2025.

Based on GAMCO Investors's 13F filing for Q3 2025, filed 12 Nov 2025.