Iridium Communications IRDM Institutional Ownership

NASDAQ IRDM

$47.08 -0.72 (-1.51%)

As of: Sep 9, 2026 · 3:59 PM EDT

Institutions by Trading Activity

478 Institutions

Increased 303 63.4%

Unchanged 51 10.7%

Reduced 124 25.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

86.52%

▲+1.75 pp QoQ

Shares Held by Institutions

92.55Mn

of 106.97Mn outstanding

▲+7.79% QoQ

Shares Outstanding

106.97Mn

14.42Mn held outside 13F filers

Institutional Investors

478

filed 13F for Jun 2026

▲+99 vs prior quarter

Net Shares Added (QoQ)

+6.69Mn

accumulated since last quarter

Value of Holdings

$4.37Bn

reported market value

Shares Owned by Institutions

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Institutions

Accumulated Distributed

Latest quarter —

Net over range —

Accumulating quarters —

Ownership Summary

Quarter ending 30 Jun, 2026

Iridium Communications Inc. (NASDAQ:IRDM) showed up in the 13F filings of 478 institutional investors as of June 2026.

They owned 86.5% of outstanding stock in June 2026, up from 84.8% the prior quarter.
They increased total shares held in Iridium Communications by 7.79% from last quarter, and the number of investors in IRDM increased 44.41% annually.
Activity in IRDM broke down as 303 buyers, 124 sellers, and 51 unchanged among 478 total holders.
Combined, these investors held 92.55Mn shares in IRDM for June 2026, up by 6.69Mn shares quarter on quarter, and down 7.32Mn shares year over year.
As of June 30, 2026, the biggest holder of Iridium Communications is BlackRock, Inc. at 13.45Mn shares, representing 12.57% of shares outstanding.
The biggest buyers of Iridium Communications for the quarter ending June 2026 included AQR CAPITAL MANAGEMENT LLC (3.93Mn), Pacer Advisors, Inc. (2.17Mn), AMERICAN CENTURY COMPANIES INC (1.39Mn), Sixth Street Partners Management Company, L.P. (1.32Mn), BALYASNY ASSET MANAGEMENT L.P. (844.02K).
Leading sellers of Iridium Communications shares for the quarter ending June 2026 were Silver Heights Capital Management Inc (1.87Mn), Man Group plc (1.49Mn), Barclays Plc (907.48K), Gotham Asset Management, LLC (839.65K), VANGUARD PORTFOLIO MANAGEMENT LLC (651.35K).
Per Business Quant, the top 10 investors in IRDM for the quarter ending June 2026 include BlackRock, Inc. (13.45Mn), AQR CAPITAL MANAGEMENT LLC (6.85Mn), VANGUARD PORTFOLIO MANAGEMENT LLC (5.44Mn), AMERICAN CENTURY COMPANIES INC (4.86Mn), State Street Corp (4.73Mn), VANGUARD CAPITAL MANAGEMENT LLC (4.23Mn), Silver Heights Capital Management Inc (3.27Mn), Gotham Asset Management, LLC (2.51Mn), DIMENSIONAL FUND ADVISORS LP (2.36Mn), VAN ECK ASSOCIATES CORP (2.27Mn).

Form 13F Holdings

478 Institutional Holders

Report period 30 Jun, 2026

Total shares held 92.55Mn

Of outstanding 86.52%

#	Institution	CIK	Shares Held	% of Outstanding	Change (QoQ)	Change (%)	Value (USD)
1	BlackRock, Inc.	0002012383	13,447,338	12.57%	▼492,280	-3.53%	$737.59Mn
2	AQR CAPITAL MANAGEMENT LLC	0001167557	6,847,072	6.40%	▲3,929,245	+134.66%	$374.33Mn
3	VANGUARD PORTFOLIO MANAGEMENT LLC	0002100121	5,440,399	5.09%	▼651,350	-10.69%	$298.41Mn
4	AMERICAN CENTURY COMPANIES INC	0000748054	4,856,440	4.54%	▲1,386,486	+39.96%	$266.38Mn
5	State Street Corp	0000093751	4,733,714	4.43%	▼316,452	-6.27%	$259.64Mn
6	VANGUARD CAPITAL MANAGEMENT LLC	0002100119	4,232,161	3.96%	▲120,836	+2.94%	$232.13Mn
7	Silver Heights Capital Management Inc	0001705712	3,274,947	3.06%	▼1,870,532	-36.35%	$179.63Mn
8	Gotham Asset Management, LLC	0001510387	2,514,317	2.35%	▼839,654	-25.03%	$137.91Mn
9	DIMENSIONAL FUND ADVISORS LP	0000354204	2,357,845	2.20%	▲198,784	+9.21%	$129.33Mn
10	VAN ECK ASSOCIATES CORP	0000869178	2,270,799	2.12%	▲766,171	+50.92%	$124.55Mn
11	Pacer Advisors, Inc.	0001616667	2,168,271	2.03%	▲2,168,271	0.00%	$118.93K
12	GEODE CAPITAL MANAGEMENT, LLC	0001214717	2,044,823	1.91%	▲37,812	+1.88%	$112.19Mn
13	Morgan Stanley	0000895421	1,517,404	1.42%	▼65,933	-4.16%	$83.23Mn
14	Sixth Street Partners Management Company, L.P.	0001812095	1,317,782	1.23%	▲1,317,782	0.00%	$72.28Mn
14	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	0000884546	1,317,782	1.23%	▼48,223	-3.53%	$72.28Mn
15	ARK Investment Management LLC	0001697748	1,215,113	1.14%	▼511,689	-29.63%	$66.65Mn
16	Bank of New York Mellon Corp	0001390777	1,144,055	1.07%	▼6,395	-0.56%	$62.75Mn
17	UBS Group AG	0001610520	1,005,602	0.94%	▼278,959	-21.72%	$55.16Mn
18	BALYASNY ASSET MANAGEMENT L.P.	0001218710	967,572	0.90%	▲844,017	+683.11%	$53.07Mn
19	Invesco Ltd.	0000914208	908,134	0.85%	▼79,792	-8.08%	$49.81Mn

Showing 1 to 20 of 478 holders