Iridium Communications Inc. (IRDM)

Highly Crowded

Held by 362 of 5,944 reporting institutions (95th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

83.92%

QoQ Change

-4.32%

Total Value

$2.4T

Shares Outstanding

105.7M

Crowding AnalysisHighly Crowded

Holders362of 5,944

Avg: 68

Uncrowded95th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.48x

90th percentile

228 buying154 selling

+107

New

-52

Closed

-4,101,927

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 2.8 QHolders: 362

Ownership Concentration

Top 5: 38.7%Top 10: 54.4%

BlackRock,15.7%

VANGUARD PORTFOLIO MANAGEMENT6.9%

Silver Heights Capital Management5.8%

STATE STREET5.7%

VANGUARD CAPITAL MANAGEMENT4.6%

Others (357)61.3%

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Conviction-Weighted Ownership

Median weight: 0.01%Avg weight: 5.53%Max: 54.85%High conviction (>1%): 1

BlackRock,

VANGUARD PORTFOLIO MANAGEMENT

Silver Heights Capital Management

STATE STREET

VANGUARD CAPITAL MANAGEMENT

AMERICAN CENTURY COMPANIES

Gotham Asset Management,

AQR CAPITAL MANAGEMENT

DIMENSIONAL FUND ADVISORS

GEODE CAPITAL MANAGEMENT,

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD PORTFOLIO MANAGEMENT$169M6.1M shr

NEWVANGUARD CAPITAL MANAGEMENT$114M4.1M shr

NEWAQR CAPITAL MANAGEMENT$81M2.9M shr

BOUGHTGotham Asset Management$29M1.0M shr

BOUGHTAMERICAN CENTURY COMPANIES$11M391K shr

SOLDARK Investment Management$63M3.6M shr

BOUGHTBlackRock$50M2.9M shr

NEWGOLDMAN SACHS GROUP$40M2.3M shr

NEWGotham Asset Management$40M2.3M shr

NEWGEODE CAPITAL MANAGEMENT$33M1.9M shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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