Iridium Communications Inc. (IRDM) Institutional Ownership

Institutions by Trading Activity

Ownership Statistics

107,898,113Shares Outstanding

581,325Shares held by institutions

$13,678,577Value of institutional holdings

84.18%Institutional ownership %

-2.43%Shares Changed QoQ

299No. of institutional investors

Shares Owned by Institutions

Shares Purchased/Sold by Institutions

Ownership Summary

According to SEC filings for the period ending December 2025, Iridium Communications Inc. (NASDAQ:IRDM) is held by 299 institutional firms.

Institutional ownership in Iridium Communications edged down to 84.2% in December 2025, compared to 90.5% in September 2025.
On a quarter-over-quarter basis, institutional holdings shifted by -2.43%, with a year-over-year a decrease of 13.33% in the count of filers.
A review of institutional activity for Iridium Communications shows 163 of 299 filers increasing their positions, while 102 reduced their stake, and 34 remained unchanged.
Collectively, institutional investors decreased their stake in Iridium Communications to 90.82Mn shares as of December 2025, a change that is down by 2.26Mn shares quarter on quarter and down 9.39Mn shares year over year.
BlackRock, Inc.'s holding of 13.89Mn shares as of December 31, 2025 makes it the primary institutional investor in Iridium Communications, owning 12.87% of the stock.
Among the most significant buyers of Iridium Communications during December 2025 were BlackRock, Inc. (2.90Mn), Gotham Asset Management, LLC (2.00Mn), STATE STREET CORP (725.86K), VANGUARD GROUP INC (677.26K), Defiance ETFs, LLC (565.15K).
Leading sellers of Iridium Communications stock in December 2025 included ARK Investment Management LLC (3.64Mn), Amova Asset Management Americas, Inc. (3.20Mn), Sumitomo Mitsui Trust Group, Inc. (3.17Mn), MILLENNIUM MANAGEMENT LLC (2.00Mn), BANK OF AMERICA CORP /DE/ (1.36Mn).
The top 10 institutional holders of Iridium Communications for the quarter ending December 2025 included BlackRock, Inc. (13.89Mn), VANGUARD GROUP INC (10.16Mn), Silver Heights Capital Management Inc (5.25Mn), STATE STREET CORP (4.76Mn), AMERICAN CENTURY COMPANIES INC (3.08Mn), ARK Investment Management LLC (2.85Mn), GOLDMAN SACHS GROUP INC (2.32Mn), Gotham Asset Management, LLC (2.31Mn), DIMENSIONAL FUND ADVISORS LP (2.09Mn), GEODE CAPITAL MANAGEMENT, LLC (1.91Mn).

299 Institutional Holders

581,325 Total Shares Held

Rows:

Download Data

Owner Name	Date	Shares Held	Change (QoQ)	Change (%)	Value (USD)
BlackRock, Inc.	31 Dec, 2025	13,891,150	2,895,186	26.33%	$241,428,182.00
VANGUARD GROUP INC	31 Dec, 2025	10,157,227	677,258	7.14%	$176,532,606.00
Silver Heights Capital Management Inc	31 Dec, 2025	5,251,133	61,430	1.18%	$91,264,692.00
STATE STREET CORP	31 Dec, 2025	4,761,749	725,856	17.99%	$82,759,198.00
AMERICAN CENTURY COMPANIES INC	31 Dec, 2025	3,078,679	199,777	6.94%	$53,507,467.00
ARK Investment Management LLC	31 Dec, 2025	2,850,606	-3,639,502	-56.08%	$49,543,532.00
GOLDMAN SACHS GROUP INC	31 Dec, 2025	2,323,170	408,903	21.36%	$40,376,711.00
Gotham Asset Management, LLC	31 Dec, 2025	2,309,750	2,002,232	651.09%	$40,143,455.00
DIMENSIONAL FUND ADVISORS LP	31 Dec, 2025	2,093,124	-234,271	-10.07%	$36,379,548.00
GEODE CAPITAL MANAGEMENT, LLC	31 Dec, 2025	1,907,797	203,820	11.96%	$33,165,119.00
Man Group plc	31 Dec, 2025	1,851,528	-160,549	-7.98%	$32,179,556.00
MORGAN STANLEY	31 Dec, 2025	1,795,202	-43,028	-2.34%	$31,200,642.00
UBS Group AG	31 Dec, 2025	1,273,219	-95,308	-6.96%	$22,128,546.00
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	31 Dec, 2025	1,206,189	161,115	15.42%	$20,963,565.00
VAN ECK ASSOCIATES CORP	31 Dec, 2025	1,204,302	441,631	57.91%	$20,931.00
Bank of New York Mellon Corp	31 Dec, 2025	1,173,761	101,765	9.49%	$20,399,970.00
Sumitomo Mitsui Trust Group, Inc.	31 Dec, 2025	1,170,252	-3,173,418	-73.06%	$20,338,980.00
ARROWSTREET CAPITAL, LIMITED PARTNERSHIP	31 Dec, 2025	1,155,467	217,886	23.24%	$20,082,016.00
CITADEL ADVISORS LLC	31 Dec, 2025	1,140,215	-509,628	-30.89%	$19,816,937.00
Amova Asset Management Americas, Inc.	31 Dec, 2025	1,117,952	-3,195,128	-74.08%	$19,418,826.00

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