Anterix Inc. (ATEX)

Accumulating

Strong institutional accumulation: ownership increased +8.04% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

95.13%

QoQ Change

+8.04%

Total Value

$672.0B

Shares Outstanding

18.7M

Crowding AnalysisCrowded

Holders132of 5,944

Avg: 68

Uncrowded89th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.68x

75th percentile

84 buying50 selling

+39

New

-22

Closed

+1.5M

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 2.7 QHolders: 132

Ownership Concentration

Top 5: 51.7%Top 10: 64.0%

Owl Creek Asset Management, L.P.30.4%

Heard Capital9.6%

BlackRock,5.7%

VANGUARD CAPITAL MANAGEMENT3.2%

QVT Financial2.8%

Others (127)48.3%

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Conviction-Weighted Ownership

Median weight: 0.08%Avg weight: 2.91%Max: 14.95%High conviction (>1%): 4

Owl Creek Asset Management, L.P.

Heard Capital

BlackRock,

VANGUARD CAPITAL MANAGEMENT

QVT Financial

PLUSTICK MANAGEMENT

JANE STREET GROUP,

GAMCO INVESTORS, INC. ET AL

DIMENSIONAL FUND ADVISORS

STATE STREET

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD CAPITAL MANAGEMENT$22M574K shr

NEWPLUSTICK MANAGEMENT$19M500K shr

NEWJANE STREET GROUP$18M459K shr

NEWDIMENSIONAL FUND ADVISORS$16M425K shr

NEWSTATE STREET$15M388K shr

NEWJefferies Financial Group$10M455K shr

NEWMILLENNIUM MANAGEMENT$10M440K shr

BOUGHTGAMCO INVESTORS, INC. ET AL$2M102K shr

SOLDVANGUARD GROUP$2M77K shr

SOLDBlackRock$294K13K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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