SEI Investments’s BillionToOne Inc BLLN Stock Holding History

SEI Investments’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	$1.15M	Sell	9,589 -3,810	-28%	-$348K	﹤0.01%	2231
2026 Q1	$1.06M	Buy	+13,399	New	+$1.1M	﹤0.01%	2326

Other funds holding BLLN

ASP

Adams Street Partners Chicago, Illinois $443M AUM 49.46% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Baillie Gifford & Co Edinburgh, United Kingdom $110B AUM 4.8% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Neuberger Berman Group New York $150B AUM 40.08% 1-Year Est. Return

BAMCO Inc New York $66.6B AUM 7.35% 1-Year Est. Return

Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

Millennium Management New York $276B AUM 44.8% 1-Year Est. Return

SEI Investments's BLLN Position: Q2 2026 in Review

SEI Investments reduced its BillionToOne Inc (BLLN) stake by 28% in Q2 2026, selling an estimated $348K and leaving 9,589 shares worth $1.15M. The position accounts for ﹤0.01% of the portfolio, ranked #2231.

SEI Investments 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.

SEI Investments held 9,589 shares of BillionToOne Inc worth $1.15M as of Q2 2026.
SEI Investments sold 3,810 BillionToOne Inc shares in Q2 2026, an estimated $348K.
BillionToOne Inc made up ﹤0.01% of SEI Investments's portfolio in Q2 2026, its #2231 holding.
SEI Investments 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 SEI Investments's 13F filing for Q2 2026, filed 14 Aug 2026.