Iridium Communications IRDM Institutional Ownership

NASDAQ IRDM

$47.90 -0.04 (-0.08%)

At close: Sep 30, 2026 · 4:00 PM EDT

Institutions by Trading Activity

479 Institutions

Increased 305 63.7%

Unchanged 51 10.6%

Reduced 123 25.7%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

86.53%

▲+2.06 pp QoQ

Shares Held by Institutions

92.56Mn

of 106.97Mn outstanding

▲+7.80% QoQ

Shares Outstanding

106.97Mn

14.41Mn held outside 13F filers

Institutional Investors

479

filed 13F for Jun 2026

▲+100 vs prior quarter

Net Shares Added (QoQ)

+6.70Mn

accumulated since last quarter

Value of Holdings

$4.43Bn

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) has 478 institutional investors that have filed 13F reports for the period ending June 2026.

These investors collectively held 86.5% of Iridium Communications's outstanding shares in June 2026, up from 84.5% in March 2026.
Their total shares held in IRDM increased 7.8% from the prior quarter, while the number of investors in Iridium Communications increased 44.41% year over year.
During the quarter, 304 of these 478 funds increased positions in IRDM, 123 reduced exposure, and 51 held steady.
Institutional investors collectively held 92.55Mn shares in Iridium Communications as of June 2026, up by 6.7Mn shares quarter on quarter, and down 5.25Mn shares year over year.
BlackRock, Inc. holds the largest position in IRDM at 13.45Mn shares as of June 30, 2026, or 12.57% of shares outstanding.
Leading buyers of Iridium Communications shares for the quarter ending June 2026 were 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).
Top sellers of IRDM stock for the quarter ending June 2026 included 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).
Business Quant data shows the 10 biggest positions in Iridium Communications as of June 2026 are held by 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

479 Institutional Holders

Report period 30 Jun, 2026

Total shares held 92.56Mn

Of outstanding 86.53%

#	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 479 holders