Iridium Communications IRDM Institutional Ownership

NASDAQ IRDM

$43.79 -0.46 (-1.04%)

At close: Oct 22, 2026 · 4:00 PM EDT

Institutions by Trading Activity

479 Institutions

Increased 305 63.7%

Unchanged 50 10.4%

Reduced 124 25.9%

Ownership Statistics

13F · as of 30 Jun, 2026

Institutional Ownership

85.32%

▲+0.86 pp QoQ

Shares Held by Institutions

91.27Mn

of 106.97Mn outstanding

▲+2.16% QoQ

Shares Outstanding

106.97Mn

15.70Mn held outside 13F filers

Institutional Investors

479

filed 13F for Jun 2026

▲+100 vs prior quarter

Net Shares Added (QoQ)

+1.93Mn

accumulated since last quarter

Value of Holdings

$4.00Bn

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

Updated Oct 21, 2026

Iridium Communications Inc. (NASDAQ:IRDM) counted 479 institutional investors among its 13F-reported shareholders for the quarter ended June 30, 2026.

These investors held 85.32% of Iridium Communications' outstanding shares at the end of Q2 2026, up from 84.47% in Q1 2026.
Total holdings of IRDM shares rose 2.16% from Q1 2026, and the holder count rose 46.04% from Q2 2025.
Of the 479 holders, 305 added to their positions, 124 reduced their stakes and 50 left their positions unchanged in Q2 2026.
Combined, institutional investors held 91.27Mn shares of IRDM as of Q2 2026, up 1.93Mn from the prior quarter and down 6.53Mn from a year earlier.
BlackRock, Inc. was the top holder of Iridium Communications as of June 30, 2026, with 13.45Mn shares, or 12.57% of shares outstanding.
Among holders that already owned Iridium Communications, the biggest buyers in Q2 2026 were AQR Capital Management LLC (+3.93Mn shares), American Century Companies Inc (+1.39Mn shares), Balyasny Asset Management L.P. (+844.02K shares), Van Eck Associates Corp (+766.17K shares) and Renaissance Technologies LLC (+481.7K shares).
The biggest cuts to IRDM positions during Q2 2026 came from Silver Heights Capital Management Inc (-1.87Mn shares), Man Group plc (-1.49Mn shares), Barclays PLC (-907.48K shares), Gotham Asset Management, LLC (-839.65K shares) and Vanguard Portfolio Management LLC (-651.35K shares).
Business Quant data shows the 10 biggest positions in Iridium Communications as of Q2 2026 were held by BlackRock, Inc. (13.45Mn shares), AQR Capital Management LLC (6.85Mn shares), Vanguard Portfolio Management LLC (5.44Mn shares), American Century Companies Inc (4.86Mn shares), State Street Corp (4.73Mn shares), Vanguard Capital Management LLC (4.23Mn shares), Silver Heights Capital Management Inc (3.27Mn shares), Gotham Asset Management, LLC (2.51Mn shares), Dimensional Fund Advisors LP (2.36Mn shares) and Van Eck Associates Corp (2.27Mn shares).

Form 13F Holdings

480 Institutional Holders

Report period 30 Jun, 2026

Total shares held 91.27Mn

Of outstanding 85.32%

#	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	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
20	Northern Trust Corp	0000073124	854,112	0.80%	▼9,382	-1.09%	$46.85Mn

Showing 1 to 20 of 480 holders