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BLLN

BillionToOne Inc
BLLN

91 hedge funds and large institutions have $790M invested in BillionToOne Inc in 2025 Q4 according to their latest regulatory filings, with 91 funds opening new positions, increasing their positions, reducing their positions, and closing their positions.

New
Increased
Maintained
Reduced
Closed

23.46% more ownership

Funds ownership: 0% → 23.46% (+23%)

Holders
91
Holders Change
+91
Holders Change %
–
% of All Funds
1.11%
Holding in Top 10
4
Holding in Top 10 Change
+4
Holding in Top 10 Change %
% of All Funds
0.05%
New
91
Increased
–
Reduced
–
Closed
–
Calls
–
Puts
–
Net Calls
–
Net Calls Change
–

Top Buyers

1
ASP
Adams Street Partners
Illinois
+$174M
2
Baillie Gifford & Co
Baillie Gifford & Co
United Kingdom
+$129M
3
Neuberger Berman Group
Neuberger Berman Group
New York
+$71.1M
4
NA
NVP Associates
California
+$52.1M
5
T. Rowe Price Associates
T. Rowe Price Associates
Maryland
+$49.2M

Top Sellers

No sellers this quarter
Name Holding Trade Value Shares
Change 		Change in
Stake
SPIA
76
Steward Partners Investment Advisory
New York
$8.18K +$10.1K +100 New
QL
77
Quarry LP
New York
$6.79K +$8.42K +83 New
SS
78
SBI Securities
Japan
$5.81K +$7.2K +71 New
TRCT
79
Tower Research Capital (TRC)
New York
$5.81K +$7.2K +71 New
CTA
80
Colonial Trust Advisors
South Carolina
$4.09K +$5.07K +50 New
MA
81
MCF Advisors
Kentucky
$3.19K +$3.96K +39 New
ACM
82
Aster Capital Management
United Arab Emirates
$2.95K +$3.65K +36 New
BIA
83
Bell Investment Advisors
California
$2.37K +$2.94K +29 New
EIPL
84
Essential Investment Partners LLC
Colorado
$2.05K +$2.54K +25 New
PWA
85
Physician Wealth Advisors
Utah
$1.39K +$1.72K +17 New
FFA
86
Frazier Financial Advisors
Ohio
$1.15K +$1.42K +14 New
Jones Financial Companies
87
Jones Financial Companies
Missouri
$982 +$1.22K +12 New
GI
88
GAMMA Investing
California
$246 +$304 +3 New
Citigroup
89
Citigroup
New York
$82 +$101 +1 New
DT
90
DV Trading
Illinois
$82 +$101 +1 New
BB
91
Berkshire Bank
Massachusetts
$2 +$2.03M +20,000 New
1 2 3
4

BLLN Hedge Fund Activity: Q4 2025 in Review

91 of the 8,223 institutional investors tracked by Wall St. Rank reported a position in BillionToOne Inc (BLLN) for Q4 2025, worth a combined $790M.

Buyers outnumbered sellers: 91 funds opened new BLLN positions and 0 closed out — a net gain of 91 holders — while 0 added to existing stakes and 0 trimmed.

The largest buyer was Adams Street Partners, opening a new position worth an estimated $174M.

  • 91 institutional investors held BillionToOne Inc (BLLN) as of Q4 2025, up from 0 in Q3 2025.
  • Funds reported $790M of BillionToOne Inc stock for Q4 2025.
  • 91 funds opened new BillionToOne Inc positions in Q4 2025 and 0 closed out, a net change of +91 holders.
  • The largest BillionToOne Inc buyer in Q4 2025 was Adams Street Partners, an estimated $174M added.

Based on aggregated 13F filings for Q4 2025.