BillionToOne, Inc. (BLLN)

Accumulating

Strong institutional accumulation: ownership increased +11.72% quarter-over-quarter.

Data as of Q1 2026

Institutional Ownership

70.83%

QoQ Change

+11.72%

Total Value

$806.0B

Shares Outstanding

15.9M

Crowding AnalysisCrowded

Holders88of 5,944

Avg: 68

Uncrowded86th percentileCrowded

Institutional Activity

Buy/Sell Ratio1.36x

69th percentile

60 buying44 selling

+29

New

-28

Closed

+1.8M

Net shares

Holding Period Distribution

estimate

Median: 2 QAvg: 1.7 QHolders: 88

Ownership Concentration

Top 5: 49.4%Top 10: 69.7%

ADAMS STREET PARTNERS15.2%

BAILLIE GIFFORD &11.2%

Civilization Ventures Management,9.8%

BAMCO6.6%

PRICE T ROWE ASSOCIATES6.6%

Others (83)50.6%

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Conviction-Weighted Ownership

Median weight: 0.14%Avg weight: 17.42%Max: 98.75%High conviction (>1%): 3

ADAMS STREET PARTNERS

BAILLIE GIFFORD &

Civilization Ventures Management,

BAMCO

PRICE T ROWE ASSOCIATES

Neuberger Berman Group

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Whale Moves Timeline (1 Quarters)

Biggest dollar-value position changes among top 10 holders

NEWBAMCO INC /NY$59M741K shr

NEWInvesco$32M407K shr

NEWWASATCH ADVISORS$29M370K shr

SOLDJPMORGAN CHASE$8M109K shr

SOLDBAILLIE GIFFORD$645K8K shr

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Institutional Trends (2 Quarters)

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Institutional Holders

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