William Blair & Company’s Merus MRUS Stock Holding History

William Blair & Company’s Portfolio MRUS Stock Details MRUS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	–	Sell	-2,151	Closed	-$203K	–	1920
2025 Q3	$203K	Buy	+2,151	New	+$140K	﹤0.01%	1459

Other funds holding MRUS

DekaBank Deutsche Girozentrale Frankfurt, Germany $59.2B AUM 26.02% 1-Year Est. Return

XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return

BIG

Brooklyn Investment Group Brooklyn, New York $3.2B AUM 26.32% 1-Year Est. Return

NAM

NTV Asset Management Charleston, West Virginia $1.02B AUM 31.16% 1-Year Est. Return

FFA

Farther Finance Advisors San Francisco, California $12.8B AUM 26.53% 1-Year Est. Return

Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return

EWA

EverSource Wealth Advisors Birmingham, Alabama $2.97B AUM 28.72% 1-Year Est. Return

Parallel Advisors San Francisco, California $6.56B AUM 32.24% 1-Year Est. Return

IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

William Blair & Company's MRUS Position: Q4 2025 in Review

William Blair & Company sold out of Merus (MRUS) in Q4 2025, closing a stake of 2,151 shares — an estimated $203K sold.

William Blair & Company first reported a position in MRUS in Q3 2025 and held it in 1 quarter. The position peaked at $203K in Q3 2025. 10 funds tracked by Wall St. Rank hold MRUS as of Q4 2025.

William Blair & Company reported no remaining Merus position as of Q4 2025 after selling out during the quarter.
William Blair & Company sold 2,151 Merus shares in Q4 2025, an estimated $203K.
William Blair & Company first reported a position in Merus in Q3 2025 and held it in 1 quarter.
William Blair & Company's Merus position peaked at $203K in Q3 2025.
10 funds tracked by Wall St. Rank held Merus as of Q4 2025.

Based on William Blair & Company's 13F filing for Q4 2025, filed 17 Feb 2026.