State of Wisconsin Investment Board’s MBX Biosciences MBX Stock Holding History

State of Wisconsin Investment Board’s Portfolio MBX Stock Details MBX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$575K	Buy	+19,262	New	+$655K	﹤0.01%	1927

Other funds holding MBX

FLSM

Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return

OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return

NMC

NEA Management Company Timonium, Maryland $1.76B AUM 223.33% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

DTC

Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return

NVP Associates Menlo Park, California $328M AUM 166.51% 1-Year Est. Return

PCH

Polar Capital Holdings London, United Kingdom $28.2B AUM 115.26% 1-Year Est. Return

Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return

State of Wisconsin Investment Board's MBX Position: Q1 2026 in Review

State of Wisconsin Investment Board opened a new position in MBX Biosciences (MBX) in Q1 2026: 19,262 shares worth $575K. The stake represents ﹤0.01% of the portfolio and ranks #1927 among its holdings.

157 funds tracked by Wall St. Rank hold MBX as of Q1 2026.

State of Wisconsin Investment Board held 19,262 shares of MBX Biosciences worth $575K as of Q1 2026.
MBX Biosciences was a new State of Wisconsin Investment Board position in Q1 2026.
MBX Biosciences made up ﹤0.01% of State of Wisconsin Investment Board's portfolio in Q1 2026, its #1927 holding.
157 funds tracked by Wall St. Rank held MBX Biosciences as of Q1 2026.

Based on State of Wisconsin Investment Board's 13F filing for Q1 2026, filed 15 May 2026.