We are live on ! Find out more
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
GCM
51
Ghisallo Capital Management
Massachusetts
$573K +$710K +7,000 New
FIA
52
FNY Investment Advisers
New York
$497K +$617K +6,080 New
Walleye Capital
53
Walleye Capital
New York
$488K +$604K +5,960 New
EGM
54
Engineers Gate Manager
New York
$477K +$591K +5,829 New
Millennium Management
55
Millennium Management
New York
$467K +$579K +5,706 New
Royal Bank of Canada
56
Royal Bank of Canada
Ontario, Canada
$456K +$565K +5,574 New
GAA
57
Green Alpha Advisors
Colorado
$436K +$540K +5,326 New
New York State Common Retirement Fund
58
New York State Common Retirement Fund
New York
$419K +$519K +5,117 New
SPC
59
Sigma Planning Corp
Michigan
$409K +$507K +5,000 New
BHCM
60
Brevan Howard Capital Management
Jersey
$394K +$462K +4,557 New
Pathstone Holdings
61
Pathstone Holdings
New Jersey
$354K +$439K +4,329 New
SSA
62
Schonfeld Strategic Advisors
New York
$347K +$430K +4,242 New
Morgan Stanley
63
Morgan Stanley
New York
$295K +$365K +3,599 New
CIAM
64
Caitong International Asset Management
Hong Kong
$230K +$285K +2,813 New
RC
65
Renaissance Capital
Connecticut
$201K +$249K +2,454 New
NCNMGF
66
Nano-Cap New Millennium Growth Fund
New York
$81.8K +$101K +1,000 New
SAM
67
Smartleaf Asset Management
Massachusetts
$80K +$95.3K +940 New
Wells Fargo
68
Wells Fargo
California
$76.4K +$94.6K +933 New
Fidelity Investments
69
Fidelity Investments
Massachusetts
$57.3K +$71K +700 New
RA
70
RiverPark Advisors
New York
$37.9K +$46.9K +463 New
Osaic Holdings
71
Osaic Holdings
Arizona
$25.4K +$31.4K +310 New
RF
72
Rossby Financial
Florida
$24.6K +$30.4K +300 New
PA
73
Parallel Advisors
California
$20.9K +$25.9K +255 New
Legal & General Group
74
Legal & General Group
United Kingdom
$15.1K +$18.7K +184 New
Bank of America
75
Bank of America
North Carolina
$11.9K +$14.8K +146 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.