Iridium Communications

IRDM • NASDAQ

Iridium Communications is a telecommunications services company in the communication services sector on NASDAQ, led by Suzanne E. McBride, with a market cap of $2.0B. As of Q3 2025, 96% of shares are held by 314 institutional investors, with BlackRock, Inc. as the largest holder at 10.36%.

Chief Executive OfficerSuzanne E. McBride

Market Cap$2.0B

Telecommunications Services

Communication Services

Employees760.0

Websiteiridium.com

Country

United States of America

Overview

Overview of institutional ownership in IRDM as of Q3 2025 with a market cap of $1.9B

All Institutions

Institutions: 314
Value Held: $1.8B
Shares Held: 101.4M
Avg Position: $5.7M
Median Position: $511.6K

Hedge Funds

Hedge Funds: 45
Value Held: $220.0M
Shares Held: 12.6M
Avg Position: $4.9M
Median Position: $1.9M

Ownership Breakdown

Institutional (non-HF)

84.59%

$1.6B

Hedge Funds

11.87%

$220.0M

Retail & Other

3.54%

$65.5M

Based on market cap of $1.9B as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.

Biggest Investors

Institutions with the largest positions in IRDM as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
B BlackRock, Inc. Institution	-	$192.0M 0.00% of portfolio	10.36% 11.0M shares	≤ Q2 2013 Held for 12y 5m+	$5.67T
VANGUARD GROUP INC Institution	Salim Ramji CEO	$165.5M 0.00% of portfolio	8.93% 9.5M shares	≤ Q2 2013 Held for 12y 5m+	$6.69T
ARK Investment Management LLC ETF Provider	Catherine Duddy Wood CEO	$113.3M 0.69% of portfolio	6.12% 6.5M shares	Q3 2019 Held for 6y 2m	$16.5B
Silver Heights Capital Management Inc. Long Only Manager	Lung-Ming Lam President	$90.6M 40.63% of portfolio	4.89% 5.2M shares	Q4 2016 Held for 8y 11m	$223.0M
S Sumitomo Mitsui Trust Holdings, Inc. Institution	-	$75.8M 0.04% of portfolio	4.09% 4.3M shares	Q1 2019 Held for 6y 8m	$173.79B
Nikko Asset Management Americas, Inc. Long Only Manager	James Mark Beyer Wesley CEO	$75.3M 0.73% of portfolio	4.06% 4.3M shares	Q3 2018 Held for 7y 2m	$10.3B
STATE STREET CORP Institution	Ronald P. O'Hanley CEO	$70.5M 0.00% of portfolio	3.80% 4.0M shares	≤ Q2 2013 Held for 12y 5m+	$2.88T
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	Dan Michael Berkovitz Chairman	$53.1M 0.04% of portfolio	2.86% 3.0M shares	Q1 2021 Held for 4y 8m	$121.98B
A AMERICAN CENTURY COMPANIES INC Institution	-	$50.3M 0.03% of portfolio	2.71% 2.9M shares	Q2 2019 Held for 6y 5m	$195.93B
DIMENSIONAL FUND ADVISORS LP Long Only Manager	David Paul Butler CEO	$40.6M 0.01% of portfolio	2.19% 2.3M shares	≤ Q2 2013 Held for 12y 5m+	$466.32B

Net Capital Flow

Institutional buying and selling activity for IRDM in Q3 2025

Traded: +$114.5M
Buyers: 177
Sellers: 171
Total Bought: +$424.6M
Total Sold: −$310.1M
Avg Position: $4.7M

Biggest Buyers

Institution	Net Bought	Current Position
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	+$38.6M +2.2M shares	$53.1M 3.0M shares
GOLDMAN SACHS GROUP INC Institution	+$31.2M +1.8M shares	$33.4M 1.9M shares
M Man Group plc Institution	+$24.4M +1.4M shares	$35.1M 2.0M shares
ARK Investment Management LLC ETF Provider	+$20.2M +1.2M shares	$113.3M 6.5M shares
Synergy Financial Management, LLC RIA/Wealth	+$20.0M +662.2K shares	$40.0M 1.3M shares
Silver Heights Capital Management Inc. Long Only Manager	+$16.8M +961.4K shares	$90.6M 5.2M shares
BANK OF AMERICA CORP /DE/ Institution	+$15.3M +877.8K shares	$27.6M 1.6M shares
P Pacer Advisors, Inc. Institution	+$13.0M +744.8K shares	$30.5M 1.7M shares
BAMCO INC /NY/ Long Only Manager	+$11.9M +-7.7M shares	$11.9M 682.9K shares
M M&G Plc Institution	+$11.6M +680.9K shares	$11.6M 680.9K shares

Biggest Sellers

Institution	Net Sold	Current Position
Van Berkom & Associates Inc. Long Only Manager	−$86.4M −2.9M shares	Sold Off 0 shares
A Arrowpoint Asset Management, LLC Hedge Fund•Multi-Strategy	−$39.1M −1.3M shares	Sold Off 0 shares
SCHRODER INVESTMENT MANAGEMENT GROUP RIA/Wealth	−$18.9M −1.1M shares	$17.2M 992.6K shares
Gotham Asset Management, LLC Hedge Fund•Long/Short	−$11.2M −643.7K shares	$5.4M 307.5K shares
MORGAN STANLEY RIA/Wealth	−$11.2M −643.5K shares	$32.1M 1.8M shares
NORTHERN TRUST CORP Institution	−$10.4M −593.2K shares	$18.2M 1.0M shares
ING INVESTMENT MANAGEMENT LLC Insurance Manager	−$9.6M −549.4K shares	$3.1M 175.7K shares
ACADIAN ASSET MANAGEMENT LLC Long Only Manager	−$9.1M −300.7K shares	Sold Off 0 shares
FMR LLC Institution	−$8.9M −511.9K shares	$6.7M 382.4K shares
H HRT FINANCIAL LLC Institution	−$6.1M −202.9K shares	Sold Off 0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited IRDM in Q3 2025

New Positions: 22
New Value: $20.4M
Exited Positions: 63
Exited Value: $197.7M

New Positions

Institution	Position Value
M M&G Plc Institution	$11.6M 680.9K shares
WORLDQUANT MILLENNIUM QUANTITATIVE STRATEGIES LLC Hedge Fund•Multi-Strategy	$3.0M 170.7K shares
WEDGE CAPITAL MANAGEMENT L L P/NC Long Only Manager	$1.2M 66.5K shares
GILDER GAGNON HOWE & CO LLC RIA/Wealth	$1.1M 63.8K shares
N New Century Financial Group, LLC RIA/Wealth	$989.3K 56.7K shares
ICON ADVISERS INC/CO Long Only Manager	$900.4K 51.6K shares
IMC-Chicago, LLC RIA/Wealth	$441.9K 25.3K shares
Horizon Investments, LLC/SC Long Only Manager	$405.4K 23.2K shares
P Polymer Capital Management LLC Hedge Fund•Multi-Strategy	$213.5K 12.2K shares
CBOE Vest Financial, LLC ETF Provider	$197.6K 11.3K shares

Exited Positions

Institution	Previous Position
Van Berkom & Associates Inc. Long Only Manager	$86.4M 2.9M shares
A Arrowpoint Asset Management, LLC Hedge Fund•Multi-Strategy	$39.1M 1.3M shares
ACADIAN ASSET MANAGEMENT LLC Long Only Manager	$9.1M 300.7K shares
H HRT FINANCIAL LLC Institution	$6.1M 202.9K shares
P PUBLIC SECTOR PENSION INVESTMENT BOARD Institution	$6.1M 202.5K shares
C CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM Institution	$5.9M 195.0K shares
L La Banque Postale Asset Management SA Institution	$5.5M 182.1K shares
Point72 Asset Management, L.P. Hedge Fund•Multi-Strategy	$4.1M 136.3K shares
Aquatic Capital Management LLC Hedge Fund•Quant	$4.0M 133.4K shares
T TEXAS PERMANENT SCHOOL FUND Institution	$3.5M 115.5K shares

Options Activity

Institutions with the largest Call and Put options positions in IRDM as of Q3 2025

Call Positions: 10
Call Value: $6.6M
Put Positions: 11
Put Value: $8.5M

Call Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$3.0M 1.7K contracts
J JANE STREET GROUP, LLC Institution	$1.2M 712.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$632.1K 362.0 contracts
W WOLVERINE TRADING, LLC Institution	$601.3K 348.0 contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$497.6K 285.0 contracts
Walleye Trading LLC RIA/Wealth	$204.3K 117.0 contracts
CAPITAL FUND MANAGEMENT S.A. Hedge Fund•Quant Macro	$202.5K 116.0 contracts
TUDOR INVESTMENT CORP ET AL Hedge Fund•Multi-Strategy	$176.3K 101.0 contracts
P PEAK6 LLC Institution	$75.1K 43.0 contracts
Caption Management, LLC Hedge Fund•Long/Short	- - contracts

Put Positions

Institution	Position Value
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity	$4.0M 2.3K contracts
CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy	$2.7M 1.6K contracts
W WOLVERINE TRADING, LLC Institution	$618.6K 358.0 contracts
P PEAK6 LLC Institution	$469.7K 269.0 contracts
J JANE STREET GROUP, LLC Institution	$459.2K 263.0 contracts
Walleye Trading Advisors, LLC Hedge Fund•Multi-Strategy	$155.4K 89.0 contracts
Walleye Trading LLC RIA/Wealth	$1.7K 1.0 contracts
GOLDMAN SACHS GROUP INC Institution	- - contracts
T Two Creeks Capital Management, LP Hedge Fund•Long/Short	- - contracts
Caption Management, LLC Hedge Fund•Long/Short	- - contracts

Most Committed Institutions

Institutions with IRDM as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Silver Heights Capital Management Inc. Long Only Manager	Lung-Ming Lam President	40.63% $90.6M	4.89% 5.2M shares	Q4 2016 Held for 8y 11m	$223.0M
ANCHOR CAPITAL MANAGEMENT COMPANY, LLC Institution	Garrett Thomas Waters CEO	11.05% $12.8M	0.69% 735.4K shares	Q4 2023 Held for 1y 11m	$116.2M
N New Century Financial Group, LLC RIA/Wealth	Jon Paul Brouard President	1.76% $989.3K	0.05% 56.7K shares	Q3 2025 Held for 2 months	$56.3M
Carolina Wealth Advisors, LLC RIA/Wealth	Christopher David St. John CEO	1.59% $3.6M	0.19% 205.5K shares	Q2 2025 Held for 5 months	$225.3M
Robertson Opportunity Capital, LLC Hedge Fund•Long/Short	James Brett Robertson President	1.53% $5.0M	0.27% 287.3K shares	Q2 2024 Held for 1y 5m	$328.2M
Synergy Financial Management, LLC RIA/Wealth	Todd Sinclair Jessup President	1.45% $40.0M	1.25% 1.3M shares	Q2 2025 Held for 5 months	$2.8B
B Botty Investors LLC Family Office	Alfredo Jose Botty CEO	0.94% $3.4M	0.18% 195.7K shares	Q2 2025 Held for 5 months	$364.5M
Nikko Asset Management Americas, Inc. Long Only Manager	James Mark Beyer Wesley CEO	0.73% $75.3M	4.06% 4.3M shares	Q3 2018 Held for 7y 2m	$10.3B
S SHERBROOKE PARK ADVISERS LLC Hedge Fund•Quant	Kun Gao Founder	0.72% $1.6M	0.08% 89.3K shares	Q4 2024 Held for 11 months	$215.3M
ARK Investment Management LLC ETF Provider	Catherine Duddy Wood CEO	0.69% $113.3M	6.12% 6.5M shares	Q3 2019 Held for 6y 2m	$16.5B

Hedge Fund Spotlight

Discover hedge funds investing in IRDM

New Age Alpha Advisors, LLC

Hedge Fund • Multi-Strategy

Portfolio ManagerArmen Raphael Arus

Portfolio Value: $2.4B
Positions: 799
Last Reported: Q3 2025

Sector Allocation

Position in Iridium Communications

Market Value: $215.4K
Shares Held: 12.3K
Portfolio Weight: 0.01%
Owned Since: 2024-Q4

Top Holding	Sector	Market Value	Weight
1 Microsoft MSFT	Software - Infrastructure Technology	$87.3M	3.67%
2 Apple AAPL	Consumer Electronics Technology	$74.1M	3.11%
3 Nvidia NVDA	Semiconductors Technology	$68.8M	2.89%