BLLN BillionToOne, Inc.
BillionToOne, Inc. (BLLN) Institutional Ownership
What the institutions did with BLLN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| ADAMS STREET PARTNERS LLC | 1.7M | 11.2% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 1.0M | 6.6% |
| BAILLIE GIFFORD & CO | 901.4K | 5.9% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 841.0K | 5.5% |
| Invesco Ltd. | 835.6K | 5.5% |
| VANGUARD CAPITAL MANAGEMENT LLC | 799.5K | 5.2% |
| NEUBERGER BERMAN GROUP LLC | 764.2K | 5.0% |
| BAMCO INC /NY/ | 742.1K | 4.9% |
| WASATCH ADVISORS LP | 518.1K | 3.4% |
| MILLENNIUM MANAGEMENT LLC | 425.0K | 2.8% |
| FULLER & THALER ASSET MANAGEMENT, INC. | 418.6K | 2.7% |
| EMERALD ADVISERS, LLC | 375.9K | 2.5% |
| NEXT CENTURY GROWTH INVESTORS LLC | 364.5K | 2.4% |
| UBS Group AG | 344.3K | 2.3% |
| JPMORGAN CHASE & CO | 340.4K | 2.2% |
| AMERIPRISE FINANCIAL INC | 320.6K | 2.1% |
| OBERWEIS ASSET MANAGEMENT INC/ | 299.0K | 2.0% |
| WELLS FARGO & COMPANY/MN | 271.6K | 1.8% |
| ALLIANCEBERNSTEIN L.P. | 262.1K | 1.7% |
| Napean Trading & Investment Co (Singapore) PTE Ltd | 233.3K | 1.5% |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 223.9K | 1.5% |
| EMERALD MUTUAL FUND ADVISERS TRUST | 204.0K | 1.3% |
| Penn Capital Management Company, LLC | 129.6K | 0.8% |
| BNP PARIBAS FINANCIAL MARKETS | 122.5K | 0.8% |
| GOLDMAN SACHS GROUP INC | 120.3K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Civilization Ventures Management, LLC | Reduced | 1.1M | 88 | -1.1M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 151.2K | 841.0K | +689.8K |
| VANGUARD CAPITAL MANAGEMENT LLC | Increased | 182.5K | 799.5K | +617.0K |
| NVP ASSOCIATES, LLC | Sold Out | 513.3K | 0 | -513.3K |
| Invesco Ltd. | Increased | 406.5K | 835.6K | +429.1K |
| MILLENNIUM MANAGEMENT LLC | New | 0 | 425.0K | +425.0K |
| FULLER & THALER ASSET MANAGEMENT, INC. | New | 0 | 418.6K | +418.6K |
| BAILLIE GIFFORD & CO | Reduced | 1.3M | 901.4K | -358.6K |
| OBERWEIS ASSET MANAGEMENT INC/ | New | 0 | 299.0K | +299.0K |
| NEXT CENTURY GROWTH INVESTORS LLC | Increased | 90.6K | 364.5K | +273.9K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 737.5K | 1.0M | +272.8K |
| WELLS FARGO & COMPANY/MN | Increased | 1.1K | 271.6K | +270.4K |
| UBS Group AG | Increased | 121.6K | 344.3K | +222.7K |
| Capital International Investors | Sold Out | 178.0K | 0 | -178.0K |
| WASATCH ADVISORS LP | Increased | 369.6K | 518.1K | +148.4K |
| EMERALD ADVISERS, LLC | Increased | 239.6K | 375.9K | +136.3K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 8 | 122.5K | +122.5K |
| VOLORIDGE INVESTMENT MANAGEMENT, LLC | New | 0 | 117.1K | +117.1K |
| GOLDMAN SACHS GROUP INC | Increased | 4.2K | 120.3K | +116.2K |
| FRED ALGER MANAGEMENT, LLC | New | 0 | 114.1K | +114.1K |
| AMERIPRISE FINANCIAL INC | Increased | 220.0K | 320.6K | +100.6K |
| T. Rowe Price Investment Management, Inc. | New | 0 | 93.0K | +93.0K |
| PFM Health Sciences, LP | Sold Out | 88.1K | 0 | -88.1K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | 0 | 83.3K | +83.3K |
| HRT FINANCIAL LP | New | 0 | 80.7K | +80.7K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Reduced | 159.6K | 79.0K | -80.6K |
| EMERALD MUTUAL FUND ADVISERS TRUST | Increased | 132.2K | 204.0K | +71.8K |
| Greenwich Wealth Management LLC | New | 0 | 71.6K | +71.6K |
| JPMORGAN CHASE & CO | Increased | 283.1K | 340.4K | +57.2K |
| Verition Fund Management LLC | New | 0 | 57.0K | +57.0K |
| NEUBERGER BERMAN GROUP LLC | Increased | 709.2K | 764.2K | +55.0K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 82.8K | 30.2K | -52.6K |
| Blue Water Life Science Advisors, LP | Increased | 20.0K | 70.0K | +50.0K |
| Deep Track Capital, LP | Sold Out | 50.0K | 0 | -50.0K |
| BANK OF AMERICA CORP /DE/ | Increased | 12.7K | 59.0K | +46.3K |
| Jump Financial, LLC | New | 0 | 46.3K | +46.3K |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 51.3K | 96.6K | +45.3K |
| MARSHALL WACE, LLP | New | 0 | 44.7K | +44.7K |
| Fox Hill Wealth Management | New | 0 | 43.7K | +43.7K |
| Weiss Asset Management LP | New | 0 | 43.1K | +43.1K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Increased | 12.5K | 54.6K | +42.1K |
| LORD, ABBETT & CO. LLC | Increased | 44.3K | 86.3K | +42.0K |
| REGENTS OF THE UNIVERSITY OF CALIFORNIA | New | 0 | 40.9K | +40.9K |
| ALLIANCEBERNSTEIN L.P. | Increased | 223.3K | 262.1K | +38.9K |
| NEW YORK STATE COMMON RETIREMENT FUND | Increased | 88.7K | 117.8K | +29.1K |
| Trexquant Investment LP | New | 0 | 28.1K | +28.1K |
| F/m Investments LLC | Increased | 16.9K | 43.6K | +26.7K |
| Quantbot Technologies LP | Increased | 40 | 24.7K | +24.6K |
| OpenArc Corporate Advisory, LLC | New | 0 | 24.5K | +24.5K |
| D. E. Shaw & Co., Inc. | Increased | 3.9K | 26.0K | +22.1K |
| TUDOR INVESTMENT CORP ET AL | New | 0 | 21.5K | +21.5K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | New | 0 | 21.4K | +21.4K |
| TD Asset Management Inc | Increased | 43.1K | 63.5K | +20.4K |
| ROYAL BANK OF CANADA | Increased | 4.8K | 25.0K | +20.2K |
| One Wealth Advisors, LLC | New | 0 | 19.9K | +19.9K |
| PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO | Sold Out | 19.5K | 0 | -19.5K |
| BlackRock, Inc. | Increased | 95.2K | 114.3K | +19.1K |
| FIRST TRUST ADVISORS LP | New | 0 | 17.5K | +17.5K |
| POLEN CAPITAL MANAGEMENT LLC | New | 0 | 17.0K | +17.0K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | Reduced | 240.6K | 223.9K | -16.7K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.