Stock Ownership/BLLN

BillionToOne Inc (BLLN): Ownership & Insider Activity

Hedge funds and institutional managers reporting a position in BLLN · Health Care. Based on the most recent 13F filing from each holder, sourced from SEC EDGAR.

Reported Holders
15
13F filers
Aggregate Value
$223.3M
Across holders
Last Price
$96.74
2026-08-24
Sector
Health Care
GICS
Quarterly fund activity12 increased3 reduced3 exited
Full exits: SOROS FUND MANAGEMENT LLC, Brevan Howard Capital Management LP, Walleye Capital LLC
Institutional Holders of BLLN
↗
15 holders
Manager⇅Type⇅Shares⇅Market Value▼% of Total⇅% of Portfolio⇅Action⇅QoQ Change⇅Quarter⇅
BAILLIE GIFFORD & CO
CIK 0001088875
Institutional Manager901K$108.2M48.4%0.1%Reduced+$88.6MQ2 2026
MILLENNIUM MANAGEMENT LLC
CIK 0001273087
Hedge Fund425K$51.0M22.8%0.0%Added—Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLC
CIK 0001556921
Hedge Fund117K$14.0M6.3%0.1%Added—Q2 2026
FRED ALGER MANAGEMENT, LLC
CIK 0000003520
Hedge Fund114K$13.7M6.1%0.0%Added—Q2 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 0001037389
Hedge Fund97K$11.6M5.2%0.0%Added+$5.4MQ2 2026
Verition Fund Management LLC
CIK 0001454027
Hedge Fund57K$6.8M3.1%0.0%Added—Q2 2026
MARSHALL WACE, LLP
CIK 0001318757
Hedge Fund45K$5.4M2.4%0.0%Added—Q2 2026
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
Hedge Fund30K$3.6M1.6%0.0%Reduced$-6.3MQ2 2026
SHAW D E & CO INC
CIK 0001009207
Hedge Fund26K$3.1M1.4%0.0%Added+$2.7MQ2 2026
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
Hedge Fund22K$2.6M1.2%0.0%Added—Q2 2026
BAILLIE GIFFORD & COReduced
Institutional Manager
$108.2M· 48.4% of total· 0.1% port· 901K sh· +$88.6M QoQ· Q2 2026
MILLENNIUM MANAGEMENT LLCAdded
Hedge Fund
$51.0M· 22.8% of total· 0.0% port· 425K sh· — QoQ· Q2 2026
VOLORIDGE INVESTMENT MANAGEMENT, LLCAdded
Hedge Fund
$14.0M· 6.3% of total· 0.1% port· 117K sh· — QoQ· Q2 2026
FRED ALGER MANAGEMENT, LLCAdded
Hedge Fund
$13.7M· 6.1% of total· 0.0% port· 114K sh· — QoQ· Q2 2026
RENAISSANCE TECHNOLOGIES LLCAdded
Hedge Fund
$11.6M· 5.2% of total· 0.0% port· 97K sh· +$5.4M QoQ· Q2 2026
Verition Fund Management LLCAdded
Hedge Fund
$6.8M· 3.1% of total· 0.0% port· 57K sh· — QoQ· Q2 2026
MARSHALL WACE, LLPAdded
Hedge Fund
$5.4M· 2.4% of total· 0.0% port· 45K sh· — QoQ· Q2 2026
TWO SIGMA INVESTMENTS, LPReduced
Hedge Fund
$3.6M· 1.6% of total· 0.0% port· 30K sh· $-6.3M QoQ· Q2 2026
SHAW D E & CO INCAdded
Hedge Fund
$3.1M· 1.4% of total· 0.0% port· 26K sh· +$2.7M QoQ· Q2 2026
TUDOR INVESTMENT CORP ET ALAdded
Hedge Fund
$2.6M· 1.2% of total· 0.0% port· 22K sh· — QoQ· Q2 2026
CITADEL ADVISORS LLCAdded
Hedge Fund
$1.8M· 0.8% of total· 0.0% port· 15K sh· +$523K QoQ· Q2 2026
Squarepoint Ops LLCReduced
Hedge Fund
$1.1M· 0.5% of total· 0.0% port· 9K sh· $-1.7M QoQ· Q2 2026
ExodusPoint Capital Management, LPAdded
Hedge Fund
$221K· 0.1% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Gotham Asset Management, LLCAdded
Hedge Fund
$214K· 0.1% of total· 0.0% port· 2K sh· — QoQ· Q2 2026
Rockefeller Capital Management L.P.Added
Hedge Fund
$34K· 0.0% of total· 0.0% port· 282 sh· — QoQ· Q2 2026
1–10 of 15
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