13F

Stock

BillionToOne, Inc.

BLLN · held by 89 managers

Reported value

$813.4M

Holders

89

+25 new · −28 exited

Holders’ est. mark

−$43.2M

Price effect on 60 books still in the name

Largest holder

$135.1M

ADAMS STREET PARTNERS LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
ADAMS STREET PARTNERS LLC1.71M$135.1M−$4.96MCut−$4.96M
BAILLIE GIFFORD & CO1.26M$99.5M−$3.65MCut−$4.32M
Civilization Ventures Management, LLC1.1M$86.8M−$3.18MCut−$3.18M
BAMCO INC /NY/741.5K$58.5M−$493KAdded$44.6M
NVP ASSOCIATES, LLC513.3K$40.5M−$1.49MCut−$1.49M
NEUBERGER BERMAN GROUP LLC709.2K$37.8M−$20MCut−$19.5M
Invesco Ltd.406.5K$32.1M−$550.5KAdded$16.6M
WASATCH ADVISORS LP369.6K$29.2MNew
JPMORGAN CHASE & CO283.1K$19.9M−$3.32MCut−$12.2M
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC240.6K$19M−$660.2KAdded$360.7K
EMERALD ADVISERS, LLC239.6K$18.9M−$548KAdded$3.45M
Napean Trading & Investment Co (Singapore) PTE Ltd233.3K$18.4M−$676.7KCut−$676.7K
ALLIANCEBERNSTEIN L.P.223.3K$18.3M$0Added$1.2M
AMERIPRISE FINANCIAL INC220K$17.4M−$354.6KAdded$7.36M
VANGUARD CAPITAL MANAGEMENT LLC182.5K$14.4MHeld
Capital International Investors178K$14.1M−$516.2KCut−$516.2K
MASSACHUSETTS FINANCIAL SERVICES CO /MA/159.6K$12.6M−$462.8KCut−$776K
VANGUARD PORTFOLIO MANAGEMENT LLC151.2K$11.9MHeld
EMERALD MUTUAL FUND ADVISERS TRUST132.2K$10.4M−$342.6KAdded$768.3K
Penn Capital Management Company, LLC126.3K$9.99MNew
UBS Group AG121.6K$9.6M−$91.6KAdded$7.01M
BlackRock, Inc.95.2K$7.51M−$207.1KAdded$1.67M
PERCEPTIVE ADVISORS LLC91.8K$7.25M−$211.2KAdded$1.29M
NEXT CENTURY GROWTH INVESTORS LLC90.6K$7.15M−$106.3KAdded$4.15M
GEODE CAPITAL MANAGEMENT, LLC89.1K$7.04M−$238KAdded$321K
NEW YORK STATE COMMON RETIREMENT FUND88.7K$7M−$14.8KAdded$6.58M
PFM Health Sciences, LP88.1K$6.95M−$253.9KCut−$212.7K
TWO SIGMA INVESTMENTS, LP82.8K$6.53MNew
Ensign Peak Advisors, Inc51.5K$4.07MNew
Renaissance Technologies51.3K$4.05MNew
Deep Track Capital, LP50K$3.95M−$145KCut−$145K
TD Asset Management Inc43.1K$3.4M−$77.5KAdded$1.22M
MANUFACTURERS LIFE INSURANCE COMPANY, THE30.5K$2.41M−$72.8KAdded$1.38M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC28.1K$2.21M−$77.2KAdded$37.3K
VANGUARD FIDUCIARY TRUST CO27.8K$2.19MHeld
SEVEN GRAND MANAGERS, LLC25K$1.97M−$72.5KCut−$72.5K
Squarepoint Ops LLC22.9K$1.81M−$22.9KAdded$1.17M
Universal- Beteiligungs- und Servicegesellschaft mbH20.6K$1.63M−$47.8KAdded$277.6K
Blue Water Life Science Advisors, LP20K$1.58MNew
State Street19.7K$1.56M−$57.1KCut−$212.6K
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO19.5K$1.54MNew
Russell Investments Group, Ltd.18.7K$1.47MNew
F/m Investments LLC16.9K$1.33MNew
Soros Fund Management14.5K$1.14M−$42.1KCut−$42K
DEUTSCHE BANK AG\13.6K$1.08MNew
SEI INVESTMENTS CO13.4K$1.06MNew
XTX Topco Ltd13.2K$1.04M−$38.2KCut−$651.9K
BANK OF AMERICA CORP /DE/12.7K$1M−$423Added$991.1K
MORGAN STANLEY12.6K$993.5K−$10.4KAdded$699K
SUSQUEHANNA INTERNATIONAL GROUP, LLP12.5K$985.6KNew
Bellevue Group AG10.6K$833.1K−$30.6KCut−$33.5K
NOMURA HOLDINGS INC8.6K$678.9KNew
Brevan Howard Capital Management LP7.72K$609.1K−$34.2KAdded$215.1K
Alyeska Investment Group, L.P.7K$552.6K−$20.3KCut−$20.3K
Walleye Capital LLC5.96K$470.2K−$17.3KCut−$17.6K
BRANDYWINE MANAGERS, LLC5.75K$453.9KNew
Green Alpha Advisors, LLC5.17K$408K−$15KCut−$27.9K
ROYAL BANK OF CANADA4.77K$377K−$13.2KCut−$79K
Pathstone Holdings, LLC4.28K$337.9K−$12.4KCut−$16.4K
GOLDMAN SACHS GROUP INC4.16K$328.2K−$12.1KCut−$1.37M
MYDA Advisors LLC4K$315.8K−$11.6KCut−$2.97M
D. E. Shaw & Co., Inc.3.86K$304.9KNew
CONNABLE OFFICE INC3.85K$303.9KNew
Cornerstone Investment Partners, LLC3.4K$268.6KNew
BARCLAYS PLC2.76K$217.7KNew
Renaissance Capital LLC1.93K$144.6K−$13.1KCut−$56.2K
Vanguard Global Advisers, LLC1.75K$138.5KHeld
Smartleaf Asset Management LLC1.3K$90.9K−$14.1KAdded$10.9K
WELLS FARGO & COMPANY/MN1.11K$87.5K−$2.71KAdded$11.1K
PRICE T ROWE ASSOCIATES INC /MD/737.5K$58.2K−$1.41KAdded$18.5K
SBI Securities Co., Ltd.680$53.7K−$206Added$47.9K
RiverPark Advisors, LLC627$49.5K−$1.34KAdded$11.6K
OSAIC HOLDINGS, INC.420$33.2K−$899Added$7.78K
Steward Partners Investment Advisory, LLC300$23.7K−$290Added$15.5K
HARBOUR INVESTMENTS, INC.180$14.2KNew
FIFTH THIRD BANCORP134$10.6KNew
Rossby Financial, LCC100$8.3K$112Cut−$16.3K
MCF Advisors LLC104$8.21K−$113Added$5.02K
US BANCORP \DE\64$5.05KNew
Colonial Trust Advisors50$3.95K−$145Cut−$145
LORD, ABBETT & CO. LLC44.3K$3.5K−$129Cut−$294
Quantbot Technologies LP40$3.16KNew
Physician Wealth Advisors, Inc.17$1.34K−$50Cut−$50
HUNTINGTON NATIONAL BANK15$1.18KNew
Frazier Financial Advisors, LLC14$1.11K−$40Cut−$40
JONES FINANCIAL COMPANIES LLLP12$835−$147Cut−$147
BNP PARIBAS FINANCIAL MARKETS8$632New
Marquette Asset Management, LLC7$553New
CITIGROUP INC1$79−$3Cut−$3

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.