BillionToOne, Inc. (BLLN) Institutional Ownership and Insiders Activity

BillionToOne, Inc. (BLLN) is widely held by institutional investors, with 159 firms reporting positions valued at approximately $1.76B based on SEC Form 13F filings for the quarter ended June 30, 2026.

Adams Street Partners Llc is the largest disclosed holder, reporting approximately $205.34M in BLLN holdings in its latest filing.

Recent insider activity includes 43 tracked Form 4 transactions over the last three months, reflecting ongoing executive and director trading activity.