Ken Griffin Iridium Communications Inc. Transaction History

Citadel Advisors LLC

$618 Billion
Q3 2025

A detailed history of Ken Griffin (Citadel Advisors LLC) transactions in Iridium Communications Inc. stock. As of the latest transaction made, Citadel Advisors LLC holds 1,649,843 shares of IRDM stock, worth $26.8 Million. This represents 0.0% of its overall portfolio holdings.

Number of Shares

1,649,843

Previous 1,212,834 36.03%

Holding current value

$26.8 Million

Previous $36.6 Million 21.28%

% of portfolio

0.0%

Previous 0.01%

27 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q3 2025 Nov 14, 2025	BUY	$17.28 - $32.43 $7.55 Million - $14.2 Million	437,009 Added 36.03%	1,649,843 $28.8 Million
Q2 2025 Aug 14, 2025	BUY	$21.57 - $30.17 $17.2 Million - $24.1 Million	797,486 Added 192.0%	1,212,834 $36.6 Million
Q1 2025 May 15, 2025	BUY	$26.87 - $32.66 $3.13 Million - $3.81 Million	116,585 Added 39.02%	415,348 $11.3 Million
Q4 2024 Feb 14, 2025	SELL	$27.32 - $33.54 $621,065 - $762,464	-22,733 Reduced 7.07%	298,763 $8.67 Million
Q3 2024 Nov 14, 2024	SELL	$25.17 - $31.03 $7.12 Million - $8.77 Million	-282,721 Reduced 46.79%	321,496 $9.79 Million

Q2 2024 Aug 14, 2024	SELL	$24.65 - $31.8 $31.3 Million - $40.4 Million	-1,271,444 Reduced 67.79%	604,217 $16.1 Million
Q1 2024 May 15, 2024	BUY	$25.59 - $40.58 $47.7 Million - $75.7 Million	1,865,127 Added 17705.78%	1,875,661 $49.1 Million
Q4 2023 Feb 14, 2024	SELL	$35.51 - $44.86 $15.1 Million - $19.1 Million	-424,700 Reduced 97.58%	10,534 $433,000
Q3 2023 Nov 14, 2023	SELL	$45.37 - $61.66 $25.7 Million - $35 Million	-567,531 Reduced 56.6%	435,234 $19.8 Million
Q2 2023 Aug 14, 2023	SELL	$58.64 - $67.26 $13.7 Million - $15.7 Million	-233,388 Reduced 18.88%	1,002,765 $62.3 Million
Q1 2023 May 15, 2023	BUY	$52.8 - $64.99 $50.6 Million - $62.2 Million	957,643 Added 343.85%	1,236,153 $76.6 Million
Q4 2022 Feb 14, 2023	BUY	$46.01 - $53.1 $12.2 Million - $14.1 Million	265,348 Added 2016.02%	278,510 $14.3 Million
Q3 2022 Nov 14, 2022	SELL	$37.58 - $47.06 $5.83 Million - $7.3 Million	-155,173 Reduced 92.18%	13,162 $584,000
Q2 2022 Aug 15, 2022	SELL	$33.3 - $42.49 $3.24 Million - $4.13 Million	-97,226 Reduced 36.61%	168,335 $6.32 Million
Q1 2022 May 16, 2022	BUY	$32.04 - $41.58 $5.24 Million - $6.81 Million	163,672 Added 160.64%	265,561 $10.7 Million
Q3 2021 Nov 15, 2021	BUY	$36.96 - $48.79 $2.77 Million - $3.66 Million	75,053 Added 279.67%	101,889 $4.06 Million
Q1 2021 May 17, 2021	BUY	$36.78 - $54.37 $332,859 - $492,048	9,050 Added 50.88%	26,836 $1.11 Million
Q4 2020 Feb 16, 2021	SELL	$25.35 - $39.4 $762,705 - $1.19 Million	-30,087 Reduced 62.85%	17,786 $699,000
Q1 2020 May 15, 2020	BUY	$17.91 - $31.88 $513,193 - $913,489	28,654 Added 149.09%	47,873 $1.07 Million
Q4 2019 Feb 14, 2020	SELL	$20.46 - $26.05 $957,528 - $1.22 Million	-46,800 Reduced 70.89%	19,219 $474,000
Q3 2019 Nov 14, 2019	BUY	$21.28 - $26.84 $219,056 - $276,290	10,294 Added 18.47%	66,019 $1.4 Million
Q2 2019 Aug 14, 2019	SELL	$21.17 - $28.12 $2.56 Million - $3.4 Million	-121,052 Reduced 68.48%	55,725 $1.3 Million
Q1 2019 May 15, 2019	BUY	$18.12 - $27.19 $1.54 Million - $2.31 Million	84,995 Added 92.61%	176,777 $0
Q4 2018 Feb 14, 2019	SELL	$16.94 - $24.17 $480,774 - $685,968	-28,381 Reduced 23.62%	91,782 $1.69 Million
Q1 2018 May 11, 2018	BUY	$11.1 - $12.85 $1.05 Million - $1.22 Million	95,016 Added 377.84%	120,163 $1.35 Million
Q4 2017 Feb 09, 2018	SELL	$10.45 - $12.7 $105,931 - $128,739	-10,137 Reduced 28.73%	25,147 $297,000
Q3 2017 Nov 09, 2017	BUY	$9.75 - $11.25 $344,019 - $396,945	35,284	35,284 $363,000

Others Institutions Holding IRDM

# of Institutions

361

Shares Held

102M

Call Options Held

368K

Put Options Held

487K

View Full List

About Iridium Communications Inc.

Ticker IRDM
Exchange NASDAQ
Sector Communication Services
Industry Telecom Services
Shares Outstandng 125,643,000
Market Cap $2.04B
Description
Iridium Communications Inc. provides mobile voice and data communications services and products to businesses, the United States and international governments, non-governmental organizations, and consumers worldwide. The company offers postpaid mobile voice and data satellite communications; prepaid mobile voice satellite communications; push-to...

More about IRDM

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