UBS Group
BLLN

UBS Group’s BillionToOne Inc BLLN Stock Holding History

UBS Group’s Portfolio BLLN Stock Details BLLN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$41.3M Buy
344,287
+222,683
+183% +$20.3M 0.01% 1943
2026
Q1 		$9.6M Buy
121,604
+90,005
+285% +$7.37M ﹤0.01% 3401
2025
Q4 		$2.59M Buy
+31,599
New +$3.2M ﹤0.01% 4714

Other funds holding BLLN

ASP
Adams Street Partners Chicago, Illinois $443M AUM 49.46% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Neuberger Berman Group
Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return
BAMCO Inc
BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

UBS Group's BLLN Position: Q2 2026 in Review

UBS Group increased its BillionToOne Inc (BLLN) stake by 183% in Q2 2026, buying an estimated $20.3M and bringing the position to 344,287 shares worth $41.3M. The position accounts for 0.01% of the portfolio, ranked #1943.

UBS Group first reported a position in BLLN in Q4 2025 and has held it in 3 quarters since. 156 funds tracked by Wall St. Rank hold BLLN as of Q2 2026.

  • UBS Group held 344,287 shares of BillionToOne Inc worth $41.3M as of Q2 2026.
  • UBS Group bought 222,683 BillionToOne Inc shares in Q2 2026, an estimated $20.3M.
  • BillionToOne Inc made up 0.01% of UBS Group's portfolio in Q2 2026, its #1943 holding.
  • UBS Group first reported a position in BillionToOne Inc in Q4 2025 and has held it in 3 quarters since.
  • 156 funds tracked by Wall St. Rank held BillionToOne Inc as of Q2 2026.

Based on UBS Group's 13F filing for Q2 2026, filed 13 Aug 2026.