Oguzhan Atay owns 4.97% of BillionToOne
2,346,710 shares as of the October 15, 2026 filing, worth $230M at the latest close.
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Free.
The stake
4.97%
worth $230M at the latest close
Stake rank
#256
by dollar value of the stake
Last sale
4 days ago
Oct 15, 2026
Last buy
None
no purchases since 2026
Oguzhan Atay owns 4.97% of BillionToOne, Inc.: 2,346,710 of 47,187,038 shares, worth about $230M at the 2026-10-16 close. The stake has moved from 4.73% in 2025 to 4.97% on 2026-10-15, across 7 sales and 0 purchases that moved it since 2016. The last trade that moved it was a planned sale of $1.1M on 2026-10-15.
How the stake is held
each class as its filings last stated it