Massachusetts Financial Services
BLLN

Massachusetts Financial Services’s BillionToOne Inc BLLN Stock Holding History

Massachusetts Financial Services’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 		$9.48M Sell
78,977
-80,596
-51% -$7.36M ﹤0.01% 766
2026
Q1 		$12.6M Sell
159,573
-3,827
-2% -$313K ﹤0.01% 710
2025
Q4 		$13.4M Buy
+163,400
New +$16.6M ﹤0.01% 695

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

Massachusetts Financial Services's BLLN Position: Q2 2026 in Review

Massachusetts Financial Services reduced its BillionToOne Inc (BLLN) stake by 51% in Q2 2026, selling an estimated $7.36M and leaving 78,977 shares worth $9.48M. The position accounts for ﹤0.01% of the portfolio, ranked #766.

Massachusetts Financial Services first reported a position in BLLN in Q4 2025 and has held it in 3 quarters since. The position peaked at $13.4M in Q4 2025. 157 funds tracked by Wall St. Rank hold BLLN as of Q2 2026.

  • Massachusetts Financial Services held 78,977 shares of BillionToOne Inc worth $9.48M as of Q2 2026.
  • Massachusetts Financial Services sold 80,596 BillionToOne Inc shares in Q2 2026, an estimated $7.36M.
  • BillionToOne Inc made up ﹤0.01% of Massachusetts Financial Services's portfolio in Q2 2026, its #766 holding.
  • Massachusetts Financial Services first reported a position in BillionToOne Inc in Q4 2025 and has held it in 3 quarters since.
  • Massachusetts Financial Services's BillionToOne Inc position peaked at $13.4M in Q4 2025.
  • 157 funds tracked by Wall St. Rank held BillionToOne Inc as of Q2 2026.

Based on Massachusetts Financial Services's 13F filing for Q2 2026, filed 3 Aug 2026.