Security record
BLLN
BillionToOne, Inc. · Healthcare · Medical - Diagnostics & Research
62Tracked holders
+17Δ holders
8.87MShares held
$1.05BReported value
+21New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +30.0% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 1.01M | +37.0% | $121.22M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 2 | Baillie Gifford ✦ | 901.42K | -28.5% | $108.15M | 0.1% | ▼ Trim | 3 | SEC ↗ ×5 |
| 3 | Invesco Ltd. | 835.61K | +105.6% | $100.26M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | Vanguard Capital Management Llc | 799.47K | +338.1% | $95.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Neuberger Berman Group LLC | 764.22K | +7.8% | $91.69M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 6 | Bamco Inc /Ny/ | 742.09K | +0.1% | $89.04M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 7 | Millennium Management ✦ | 425.03K | New | $51.00M | 0.0% | New | 1 | SEC ↗ |
| 8 | UBS Group AG | 344.29K | +183.1% | $41.31M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 9 | JPMorgan Chase ✦ | 340.37K | +20.2% | $41.01M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 10 | Ameriprise Financial Inc | 320.61K | +45.7% | $38.50M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 11 | Wells Fargo & Company/Mn | 271.55K | +24408.5% | $32.58M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 12 | UBS AM, a distinct business unit of… | 223.93K | -6.9% | $26.87M | 0.0% | ▼ Trim | 3 | SEC ↗ ×3 |
| 13 | Alliancebernstein L.P. | 262.10K | +17.4% | $20.69M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | Bnp Paribas Financial Markets | 122.53K | +1531487.5% | $14.70M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Goldman Sachs Group ✦ | 120.33K | +2793.8% | $14.44M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 16 | New York State Common Retirement… | 117.77K | +32.8% | $14.13M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 114.28K | +20.1% | $13.71M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 18 | Renaissance Technologies ✦ | 96.60K | +88.5% | $11.59M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Geode Capital Management ✦ (passive) | 87.93K | -1.3% | $10.55M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 20 | Healthcare Of Ontario Pension Plan… | 83.30K | New | $9.99M | 0.0% | New | 1 | SEC ↗ |
| 21 | Hrt Financial Lp | 80.71K | New | $9.68M | 0.0% | New | 1 | SEC ↗ |
| 22 | Massachusetts Financial Services Co… | 78.98K | -50.5% | $9.48M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 23 | Td Asset Management Inc | 63.48K | +47.3% | $7.62M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 24 | Bank Of America Corp /De/ | 59.04K | +364.6% | $7.08M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 25 | Susquehanna International Group, Llp | 54.60K | +337.3% | $6.55M | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 26 | Ensign Peak Advisors, Inc | 51.43K | -0.1% | $6.17M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Marshall Wace ✦ | 44.66K | New | $5.36M | 0.0% | New | 1 | SEC ↗ ×2 |
| 28 | Manufacturers Life Insurance… | 41.70K | +36.7% | $5.00M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 29 | State Street Global Advisors ✦ (passive) | 35.72K | +81.3% | $4.29M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 30 | Universal- Beteiligungs- und… | 32.53K | +58.0% | $3.90M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 31 | Two Sigma Investments ✦ | 30.18K | -63.5% | $3.62M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Russell Investments Group, Ltd. | 29.07K | +55.8% | $3.49M | 0.0% | ▲ Add | 2 | SEC ↗ ×5 |
| 33 | Charles Schwab Investment… | 26.61K | -5.1% | $3.19M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 34 | D. E. Shaw & Co. ✦ | 25.98K | +572.7% | $3.12M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Royal Bank Of Canada | 24.96K | +423.3% | $3.00M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 36 | Tudor Investment Corp Et Al | 21.52K | New | $2.58M | 0.0% | New | 1 | SEC ↗ |
| 37 | MIRAE ASSET GLOBAL ETFS HOLDINGS… | 21.39K | New | $2.57M | 0.0% | New | 1 | SEC ↗ |
| 38 | Morgan Stanley ✦ | 18.42K | +46.4% | $2.21M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 39 | First Trust Advisors Lp | 17.50K | New | $2.10M | 0.0% | New | 1 | SEC ↗ |
| 40 | Barclays Plc | 17.45K | +532.6% | $2.09M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Citadel Advisors ✦ | 15.15K | New | $1.82M | 0.0% | New | 1 | SEC ↗ ×2 |
| 42 | Deutsche Bank Ag\ | 13.64K | 0.0% | $1.64M | 0.0% | Held | 2 | SEC ↗ |
| 43 | Osaic Holdings, Inc. | 13.54K | +3122.9% | $1.62M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 44 | Sei Investments Co | 9.59K | -28.4% | $1.15M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 45 | Squarepoint Ops LLC | 8.77K | -61.8% | $1.05M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | Fifth Third Bancorp | 7.51K | +5504.5% | $901,107 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Blair William & Co/Il | 6.98K | New | $837,220 | 0.0% | New | 1 | SEC ↗ |
| 48 | LPL Financial LLC | 6.79K | New | $815,264 | 0.0% | New | 1 | SEC ↗ |
| 49 | First Manhattan Co. Llc. | 3.36K | New | $403,373 | 0.0% | New | 1 | SEC ↗ |
| 50 | Canada Pension Plan Investment Board | 3.30K | New | $395,934 | 0.0% | New | 1 | SEC ↗ |
| 51 | Envestnet Asset Management Inc | 3.25K | New | $390,175 | 0.0% | New | 1 | SEC ↗ |
| 52 | Cerity Partners LLC | 3.00K | New | $359,940 | 0.0% | New | 1 | SEC ↗ |
| 53 | Pnc Financial Services Group, Inc. | 2.55K | New | $306,429 | 0.0% | New | 1 | SEC ↗ ×4 |
| 54 | Raymond James Financial Inc | 2.43K | New | $292,031 | 0.0% | New | 1 | SEC ↗ ×2 |
| 55 | Bank of New York Mellon Corp | 1.93K | New | $231,849 | 0.0% | New | 1 | SEC ↗ ×4 |
| 56 | Victory Capital Management Inc | 1.91K | New | $228,802 | 0.0% | New | 1 | SEC ↗ |
| 57 | Gotham Asset Management ✦ | 1.78K | New | $213,804 | 0.0% | New | 1 | SEC ↗ |
| 58 | Us Bancorp \De\ | 1.35K | +2007.8% | $161,853 | 0.0% | ▲ Add | 2 | SEC ↗ ×2 |
| 59 | Citigroup Inc | 886 | +88500.0% | $106,302 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Jones Financial Companies Lllp | 816 | +6700.0% | $96,427 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Rockefeller Capital Management L.P. | 282 | New | $33,834 | 0.0% | New | 1 | SEC ↗ |
| 62 | Fidelity (FMR) ✦ | 7 | New | $840 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Millennium Management | $51.00M | 0.0% |
| Healthcare Of Ontario Pension… | $9.99M | 0.0% |
| Hrt Financial Lp | $9.68M | 0.0% |
| Marshall Wace | $5.36M | 0.0% |
| Tudor Investment Corp Et Al | $2.58M | 0.0% |
| MIRAE ASSET GLOBAL ETFS… | $2.57M | 0.0% |
| First Trust Advisors Lp | $2.10M | 0.0% |
| Citadel Advisors | $1.82M | 0.0% |
| Blair William & Co/Il | $837,220 | 0.0% |
| LPL Financial LLC | $815,264 | 0.0% |
| First Manhattan Co. Llc. | $403,373 | 0.0% |
| Canada Pension Plan… | $395,934 | 0.0% |
Exited
| Capital International… | $14.05M | was 0.0% |
| Soros Fund Management | $1.14M | was 0.0% |
| Nomura Holdings Inc | $678,884 | was 0.0% |
| Alyeska Investment Group, L.P. | $552,580 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 88 holders, 11.06M shares, $793.58M reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Oct 05
ten Bosch John Roderick
Officer · 1.42K sh · $148,998
Oct 05
Tsao David
Officer, Director · 20 sh · $2,202
Oct 05
Tsao David
Officer, Director · 100 sh · $11,009
Oct 05
ten Bosch John Roderick
Officer · 1.42K sh · $148,998
Oct 05
Tsao David
Officer, Director · 4.92K sh · $533,554
Oct 05
Tsao David
Officer, Director · 400 sh · $42,442
Oct 05
Tsao David
Officer, Director · 1.83K sh · $199,625
Oct 05
Tsao David
Officer, Director · 1.91K sh · $204,635
Oct 05
Tsao David
Officer, Director · 866 sh · $91,710
Oct 05
Tsao David
Officer, Director · 2.92K sh · $318,398
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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