Siren LLC’s BillionToOne Inc BLLN Stock Holding History

Siren LLC’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	–	Sell	-83,833	Closed	-$6.86M	–	131
2025 Q4	$6.86M	Buy	+83,833	New	+$8.5M	0.2%	68

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

Siren LLC's BLLN Position: Q1 2026 in Review

Siren LLC sold out of BillionToOne Inc (BLLN) in Q1 2026, closing a stake of 83,833 shares — an estimated $6.86M sold.

Siren LLC first reported a position in BLLN in Q4 2025 and held it in 1 quarter. The position peaked at $6.86M in Q4 2025. 91 funds tracked by Wall St. Rank hold BLLN as of Q1 2026.

Siren LLC reported no remaining BillionToOne Inc position as of Q1 2026 after selling out during the quarter.
Siren LLC sold 83,833 BillionToOne Inc shares in Q1 2026, an estimated $6.86M.
Siren LLC first reported a position in BillionToOne Inc in Q4 2025 and held it in 1 quarter.
Siren LLC's BillionToOne Inc position peaked at $6.86M in Q4 2025.
91 funds tracked by Wall St. Rank held BillionToOne Inc as of Q1 2026.

Based on Siren LLC's 13F filing for Q1 2026, filed 14 May 2026.