Blackstone Mortgage Trust, Inc. (BXMT)

Highly Crowded

Held by 329 of 5,944 reporting institutions (95th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

65.41%

QoQ Change

N/A

Total Value

$2.1T

Shares Outstanding

168.7M

Crowding AnalysisHighly Crowded

Holders329of 5,944

Avg: 68

Uncrowded95th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.14x

86th percentile

167 buying147 selling

+45

New

-48

Closed

-400,172

Net shares

Holding Period Distribution

estimate

Median: 5 QAvg: 4.2 QHolders: 329

Ownership Concentration

Top 5: 50.6%Top 10: 62.5%

BlackRock,22.2%

Blackstone8.4%

VANGUARD PORTFOLIO MANAGEMENT8.0%

VANGUARD CAPITAL MANAGEMENT6.5%

STATE STREET5.6%

Others (324)49.4%

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Conviction-Weighted Ownership

Median weight: 0.01%Avg weight: 0.09%Max: 0.69%High conviction (>1%): 0

BlackRock,

Blackstone

VANGUARD PORTFOLIO MANAGEMENT

VANGUARD CAPITAL MANAGEMENT

STATE STREET

GEODE CAPITAL MANAGEMENT,

CHARLES SCHWAB INVESTMENT MANAGEMENT

UBS Group AG

Parallax Volatility Advisers, L.P.

MORGAN STANLEY

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWVANGUARD PORTFOLIO MANAGEMENT$168M8.8M shr

NEWVANGUARD CAPITAL MANAGEMENT$138M7.2M shr

NEWUBS Group AG$44M2.3M shr

SOLDParallax Volatility Advisers, L.P.$21M1.1M shr

SOLDMORGAN STANLEY$3M169K shr

NEWBAMCO INC /NY$38M2.0M shr

NEWNORGES BANK$38M2.0M shr

BOUGHTParallax Volatility Advisers, L.P.$15M783K shr

BOUGHTBlackstone$13M682K shr

SOLDVANGUARD GROUP$6M332K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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