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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
B
26
Braidwell
Connecticut
$4.09M +$5.07M +50,000 New
DTC
27
Deep Track Capital
Connecticut
$4.09M +$5.07M +50,000 New
Lord, Abbett & Co
28
Lord, Abbett & Co
New Jersey
$3.79M +$4.7M +46,308 New
MA
29
MYDA Advisors
New York
$3.29M +$4.08M +40,200 New
NCGI
30
Next Century Growth Investors
Minnesota
$3M +$3.72M +36,659 New
Verition Fund Management
31
Verition Fund Management
Connecticut
$2.73M +$3.38M +33,311 New
UBS Group
32
UBS Group
Switzerland
$2.59M +$3.2M +31,599 New
TD Asset Management
33
TD Asset Management
Ontario, Canada
$2.19M +$2.71M +26,730 New
Charles Schwab
34
Charles Schwab
California
$2.18M +$2.7M +26,604 New
CCM
35
Catalio Capital Management
New York
$2.09M +$2.59M +25,505 New
SGM
36
Seven Grand Managers
New York
$2.05M +$2.54M +25,000 New
State Street
37
State Street
Massachusetts
$1.77M +$2.19M +21,600 New
Marshall Wace
38
Marshall Wace
United Kingdom
$1.71M +$2.12M +20,902 New
Goldman Sachs
39
Goldman Sachs
New York
$1.7M +$2.1M +20,715 New
XT
40
XTX Topco
Cayman Islands
$1.69M +$2.1M +20,678 New
SPPAM
41
Summit Partners Public Asset Management
Massachusetts
$1.62M +$2.01M +19,783 New
WP
42
Woodline Partners
California
$1.39M +$1.72M +17,000 New
Universal-Beteiligungs- und Servicegesellschaft
43
Universal-Beteiligungs- und Servicegesellschaft
Germany
$1.35M +$1.67M +16,473 New
SFM
44
Soros Fund Management
New York
$1.19M +$1.47M +14,500 New
Manulife (Manufacturers Life Insurance)
45
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$1.03M +$1.23M +12,117 New
BG
46
Bellevue Group
Switzerland
$867K +$1.07M +10,589 New
Norges Bank
47
Norges Bank
Norway
$818K +$1.01M +10,000 New
Squarepoint
48
Squarepoint
New York
$646K +$800K +7,891 New
QC
49
Quadrature Capital
United Kingdom
$614K +$760K +7,499 New
Alyeska Investment Group
50
Alyeska Investment Group
Illinois
$573K +$710K +7,000 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.