BillionToOne, Inc. - Class A common stock (BLLN)

CUSIP: 090168105

Q3 2026 13F Holders as of 30 Sep 2026

Security type / class
Equity / Class A common stock
Total 13F shares
9,029,932
Total 13F value
$963,183,736
Holder snapshot 6 signals
Share change
+1,475,962
SEC-reported price per share
$106.44
Number of holders
82
Value change
+$149,790,212
Number of buys
58
Number of sells
26
Security identity Names, identifiers, and filing context for this profile. 1 source field
Shares outstanding
43,267,620

Security key

090168105

Report period

Q3 2026

Institutions

82

Top holders

10

BLLN full security history Ownership snapshot Full 13F holder table Previous quarter: Q4 2025 BillionToOne, Inc. SEC filings BillionToOne, Inc. company facts

Broader feeds

Latest 13F filings Latest 13D/G filings Investors directory

Ownership snapshot

Top reported holders of BLLN - BillionToOne, Inc. - Class A common stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.

Comparable stake leader
Humming Bird Ventures Man...
Disclosed value leader
Humming Bird Ventures Man...
Comparable rows
4/15
Latest evidence
30 Sep 2026
13D/G 3/4/5 13F Lead comparable stake: 19% 11 rows are not safely comparable across share classes. 13D/G row: Humming Bird Ventures Management NV Showing 1-6 of 15 holder rows.

Quick read

Humming Bird Ventures Management NV leads the comparable SEC ownership view at 19%.

4 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.

Open SEC evidence Opens Humming Bird Ventures Management NV's linked filing trail.
Comparable ownership Top 4
Humming Bird Ventures Management NV 19%
NeoTribe Ventures I, L.P. 11%
Oguzhan Atay 7.3%
David Tsao 6.9%

Ownership % is shown only when SEC disclosures are safely comparable across share classes.

Detailed SEC evidence table Showing 1-6 of 15 holder rows
Holder Evidence Ownership % Position 12M Net Δ As of
Humming Bird Ventures Management NV
13D/G 3/4/5
Firat Ileri · 10%+ Owner
13D/G 3/4/5
19%
Reported 13D/G · 30 Sep 2026
$855,223,793
8,034,797 shares
 +$15,706,286 30 Sep 2026
NeoTribe Ventures I, L.P.
13D/G 3/4/5
Krishna Kittu Kolluri ("Kolluri") · 10%+ Owner
13D/G 3/4/5
11%
Reported 13D/G · 07 Nov 2025
$422,218,059
4,359,505 shares
 $0 07 Nov 2025
Oguzhan Atay
13D/G
13D/G
7.3%
Reported 13D/G · 31 Dec 2025
$310,584,488
3,206,861 shares
 $0 31 Dec 2025
David Tsao
13D/G
13D/G
6.9%
Reported 13D/G · 31 Dec 2025
$294,014,034
3,035,767 shares
 $0 31 Dec 2025
NeoTribe Associates I, L.P.
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
$6,896,356
87,362 shares
 — 09 Jun 2026
Neotribe Ignite Fund I, L.P.
3/4/5
10%+ Owner
3/4/5
—
denominator unverified
$6,896,356
87,362 shares
 — 09 Jun 2026
How to read this table

Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

13F holder rows

Institutional holders as of Q3 2026

Investor-level positions for this CUSIP, loaded as an interactive table.

Institutions
82
Shares
9,029,932
Rows available
82
Investor Option Weight % Change % SEC-reported value * Price Shares Share Change Activity Report Period

* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.

Compare Q3 2026 vs Q4 2025 Across Filers

Q4 2025 holders
90
Q3 2026 holders
82
Holder diff
-8
Investor Q4 2025 Shares Q3 2026 Shares Share Diff Share Chg % Q4 2025 value Q3 2026 value Value change Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend
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