GRAIL, Inc. (GRAL)

Highly Crowded

Held by 355 of 5,944 reporting institutions (95th percentile) — extremely crowded.

Data as of Q1 2026

Institutional Ownership

90.42%

QoQ Change

+8.65%

Total Value

$1.9T

Shares Outstanding

41.0M

Crowding AnalysisHighly Crowded

Holders355of 5,944

Avg: 68

Uncrowded95th percentileCrowded

Institutional Activity

Buy/Sell Ratio0.63x

83th percentile

143 buying228 selling

+48

New

-109

Closed

+5.2M

Net shares

Holding Period Distribution

estimate

Median: 3 QAvg: 3 QHolders: 355

Ownership Concentration

Top 5: 37.7%Top 10: 59.0%

BAKER BROS. ADVISORS10.9%

FARALLON CAPITAL MANAGEMENT8.8%

BlackRock,8.0%

STATE STREET5.1%

PRIMECAP MANAGEMENT CO/CA/5.0%

Others (350)62.3%

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Conviction-Weighted Ownership

Median weight: 0.27%Avg weight: 0.58%Max: 1.61%High conviction (>1%): 3

BAKER BROS. ADVISORS

FARALLON CAPITAL MANAGEMENT

BlackRock,

STATE STREET

PRIMECAP MANAGEMENT CO/CA/

Deep Track Capital,

Sessa Capital IM, L.P.

MORGAN STANLEY

VANGUARD CAPITAL MANAGEMENT

Jefferies Financial Group

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Whale Moves Timeline (8 Quarters)

Biggest dollar-value position changes among top 10 holders

BOUGHTBAKER BROS. ADVISORS$100M1.9M shr

NEWDeep Track Capital$89M1.7M shr

NEWSessa Capital IM, L.P.$89M1.7M shr

NEWVANGUARD CAPITAL MANAGEMENT$79M1.5M shr

NEWJefferies Financial Group$68M1.3M shr

NEWSUSQUEHANNA INTERNATIONAL GROUP, LLP$103M1.2M shr

BOUGHTFARALLON CAPITAL MANAGEMENT$85M994K shr

SOLDCRCM$66M770K shr

BOUGHTMORGAN STANLEY$50M589K shr

BOUGHTSTATE STREET$44M511K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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