Citadel Advisors’s BillionToOne Inc BLLN Stock Holding History

Citadel Advisors’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	$426K	Buy	+5,400	New	+$442K	﹤0.01%	9686

Other funds holding BLLN

ASP

Adams Street Partners Chicago, Illinois $260M AUM 30.38% 1-Year Est. Return

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 New York $33.1B AUM 11.16% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

NVP Associates Menlo Park, California $176M AUM 208.78% 1-Year Est. Return

Neuberger Berman Group New York $131B AUM 28.36% 1-Year Est. Return

Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

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

JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return

Citadel Advisors's BLLN Position: Q1 2026 in Review

Citadel Advisors sold out of BillionToOne Inc (BLLN) in Q1 2026, closing a stake of 148,868 shares — an estimated $12.2M sold.

Citadel Advisors first reported a position in BLLN in Q4 2025 and held it in 1 quarter. The position peaked at $12.2M in Q4 2025. 91 funds tracked by Wall St. Rank hold BLLN as of Q1 2026.

Citadel Advisors reported no remaining BillionToOne Inc position as of Q1 2026 after selling out during the quarter.
Citadel Advisors sold 148,868 BillionToOne Inc shares in Q1 2026, an estimated $12.2M.
Citadel Advisors first reported a position in BillionToOne Inc in Q4 2025 and held it in 1 quarter.
Citadel Advisors's BillionToOne Inc position peaked at $12.2M in Q4 2025.
91 funds tracked by Wall St. Rank held BillionToOne Inc as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.