T. Rowe Price Associates
BLLN

T. Rowe Price Associates’s BillionToOne Inc BLLN Stock Holding History

T. Rowe Price Associates’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
Q1 		$58.2M Buy
737,518
+252,235
+52% +$20.6M 0.01% 733
2025
Q4 		$39.7M Buy
+485,283
New +$49.2M ﹤0.01% 875

Other funds holding BLLN

ASP
Adams Street Partners Chicago, Illinois $260M AUM 30.38% 1-Year Est. Return
Baillie Gifford & Co
Baillie Gifford & Co Edinburgh, United Kingdom $97.9B AUM 20.73% 1-Year Est. Return
CVM
Civilization Ventures Management Belvedere Tiburon, California $87.9M AUM
BAMCO Inc
BAMCO Inc New York $33.1B AUM 11.16% 1-Year Est. Return
NA
NVP Associates Menlo Park, California $176M AUM 208.78% 1-Year Est. Return
Neuberger Berman Group
Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
UBS AM
UBS AM Chicago, Illinois $481B AUM 26.39% 1-Year Est. Return

T. Rowe Price Associates's BLLN Position: Q1 2026 in Review

T. Rowe Price Associates increased its BillionToOne Inc (BLLN) stake by 52% in Q1 2026, buying an estimated $20.6M and bringing the position to 737,518 shares worth $58.2M. The position accounts for 0.01% of the portfolio, ranked #733.

T. Rowe Price Associates first reported a position in BLLN in Q4 2025 and has held it in 2 quarters since. 91 funds tracked by Wall St. Rank hold BLLN as of Q1 2026.

  • T. Rowe Price Associates held 737,518 shares of BillionToOne Inc worth $58.2M as of Q1 2026.
  • T. Rowe Price Associates bought 252,235 BillionToOne Inc shares in Q1 2026, an estimated $20.6M.
  • BillionToOne Inc made up 0.01% of T. Rowe Price Associates's portfolio in Q1 2026, its #733 holding.
  • T. Rowe Price Associates first reported a position in BillionToOne Inc in Q4 2025 and has held it in 2 quarters since.
  • 91 funds tracked by Wall St. Rank held BillionToOne Inc as of Q1 2026.

Based on T. Rowe Price Associates's 13F filing for Q1 2026, filed 15 May 2026.