Baillie Gifford & Co
BLLN

Baillie Gifford & Co’s BillionToOne Inc BLLN Stock Holding History

Baillie Gifford & Co’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 		$108M Sell
901,420
-358,573
-28% -$32.7M 0.1% 130
2026
Q1 		$99.5M Sell
1,259,993
-8,170
-0.6% -$669K 0.1% 119
2025
Q4 		$104M Buy
+1,268,163
New +$129M 0.09% 125

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

Baillie Gifford & Co's BLLN Position: Q2 2026 in Review

Baillie Gifford & Co reduced its BillionToOne Inc (BLLN) stake by 28% in Q2 2026, selling an estimated $32.7M and leaving 901,420 shares worth $108M. The position accounts for 0.1% of the portfolio, ranked #130.

Baillie Gifford & Co first reported a position in BLLN in Q4 2025 and has held it in 3 quarters since. 157 funds tracked by Wall St. Rank hold BLLN as of Q2 2026.

  • Baillie Gifford & Co held 901,420 shares of BillionToOne Inc worth $108M as of Q2 2026.
  • Baillie Gifford & Co sold 358,573 BillionToOne Inc shares in Q2 2026, an estimated $32.7M.
  • BillionToOne Inc made up 0.1% of Baillie Gifford & Co's portfolio in Q2 2026, its #130 holding.
  • Baillie Gifford & Co first reported a position in BillionToOne Inc in Q4 2025 and has held it in 3 quarters since.
  • 157 funds tracked by Wall St. Rank held BillionToOne Inc as of Q2 2026.

Based on Baillie Gifford & Co's 13F filing for Q2 2026, filed 6 Aug 2026.