Vanguard Portfolio Management
BLLN

Vanguard Portfolio Management’s BillionToOne Inc BLLN Stock Holding History

Vanguard Portfolio Management’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 		$101M Buy
840,970
+689,757
+456% +$63M ﹤0.01% 1498
2026
Q1 		$11.9M Buy
+151,213
New +$12.4M ﹤0.01% 2063

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
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
Fuller & Thaler Asset Management
Fuller & Thaler Asset Management San Mateo, California $36.7B AUM 74.15% 1-Year Est. Return

Vanguard Portfolio Management's BLLN Position: Q2 2026 in Review

Vanguard Portfolio Management increased its BillionToOne Inc (BLLN) stake by 456% in Q2 2026, buying an estimated $63M and bringing the position to 840,970 shares worth $101M. The position accounts for ﹤0.01% of the portfolio, ranked #1498.

Vanguard Portfolio Management first reported a position in BLLN in Q1 2026 and has held it in 2 quarters since. 157 funds tracked by Wall St. Rank hold BLLN as of Q2 2026.

  • Vanguard Portfolio Management held 840,970 shares of BillionToOne Inc worth $101M as of Q2 2026.
  • Vanguard Portfolio Management bought 689,757 BillionToOne Inc shares in Q2 2026, an estimated $63M.
  • BillionToOne Inc made up ﹤0.01% of Vanguard Portfolio Management's portfolio in Q2 2026, its #1498 holding.
  • Vanguard Portfolio Management first reported a position in BillionToOne Inc in Q1 2026 and has held it in 2 quarters since.
  • 157 funds tracked by Wall St. Rank held BillionToOne Inc as of Q2 2026.

Based on Vanguard Portfolio Management's 13F filing for Q2 2026, filed 13 Aug 2026.