BillionToOne, Inc. (BLLN) Institutional Ownership

Ownership Summary

BillionToOne, Inc. (NASDAQ:BLLN) currently has 83 active institutional owners and shareholders as of today (December 2025), that have filed 13F forms with the Securities Exchange Commission (SEC).

• Institutional share ownership changed by nan% QoQ, while the number of institutional owners saw an unavailable change YoY.
• During the quarter, 83 institutions bought more BillionToOne shares, 0 sold shares, and 0 of the 83 total investors held their position steady.
• The total number of shares held by institutions in BillionToOne increased to 7.77Mn as of December 2025, a net change of up by 7.77Mn shares quarter on quarter, and down N/A shares year over year.
• The top institutional stake in BillionToOne as of December 31, 2025 belongs to ADAMS STREET PARTNERS LLC, which owns 1.71Mn shares, or 11.36% of the company.
• Among the most significant buyers of BillionToOne during December 2025 were ADAMS STREET PARTNERS LLC (1.71Mn), BAILLIE GIFFORD & CO (1.27Mn), Neuberger Berman Group LLC (700.87K), NVP Associates, LLC (513.33K), JPMORGAN CHASE & CO (391.96K).
• The top 10 institutional holders of BillionToOne for the quarter ending December 2025 included ADAMS STREET PARTNERS LLC (1.71Mn), BAILLIE GIFFORD & CO (1.27Mn), Neuberger Berman Group LLC (700.87K), NVP Associates, LLC (513.33K), JPMORGAN CHASE & CO (391.96K), VANGUARD GROUP INC (352.37K), Napean Trading & Investment Co (Singapore) PTE Ltd (233.33K), UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC (227.66K), ALLIANCEBERNSTEIN L.P. (208.59K), EMERALD ADVISERS, LLC (188.95K).