Rallybio Corporation (RLYB)

Accumulating

Strong institutional accumulation: ownership increased +88.17% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

88.19%

QoQ Change

+88.17%

Total Value

$41.7B

Shares Outstanding

5.3M

Crowding AnalysisCrowded

Holders37of 5,944

Avg: 68

Uncrowded80th percentileCrowded

Institutional Activity

Buy/Sell Ratio38x

63th percentile

38 buying1 selling

+38

New

-1

Closed

+4.7M

Net shares

Holding Period Distribution

estimate

Median: 1 QAvg: 1 QHolders: 37

Ownership Concentration

Top 5: 53.0%Top 10: 82.7%

FMR17.0%

VIKING GLOBAL INVESTORS11.2%

Cormorant Asset Management,8.6%

TPG GP A,8.1%

BALYASNY ASSET MANAGEMENT L.P.8.1%

Others (32)47.0%

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Conviction-Weighted Ownership

Median weight: 0.11%Avg weight: 0.26%Max: 0.96%High conviction (>1%): 0

FMR

VIKING GLOBAL INVESTORS

Cormorant Asset Management,

TPG GP A,

BALYASNY ASSET MANAGEMENT L.P.

Laurion Capital Management

Nantahala Capital Management,

Pivotal bioVenture Partners Investment Advisor

5AM Venture Management,

Almitas Capital

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Whale Moves Timeline (1 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWFMR$7M793K shr

NEWVIKING GLOBAL INVESTORS$5M524K shr

NEWCormorant Asset Management$4M400K shr

NEWTPG GP A$3M379K shr

NEWBALYASNY ASSET MANAGEMENT L.P.$3M377K shr

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Institutional Trends (8 Quarters)

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Institutional Holders

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