State Street
MBX

State Street’s MBX Biosciences MBX Stock Holding History

State Street’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
Q2 		$47.7M Buy
864,466
+77,258
+10% +$2.7M ﹤0.01% 1873
2026
Q1 		$23.5M Buy
787,208
+114,468
+17% +$3.89M ﹤0.01% 2161
2025
Q4 		$21.2M Buy
672,740
+353,466
+111% +$8.58M ﹤0.01% 2242
2025
Q3 		$5.59M Buy
319,274
+54,155
+20% +$724K ﹤0.01% 2962
2025
Q2 		$3.03M Buy
265,119
+87,899
+50% +$895K ﹤0.01% 3164
2025
Q1 		$1.31M Buy
177,220
+34,571
+24% +$366K ﹤0.01% 3373
2024
Q4 		$2.63M Buy
+142,649
New +$3.04M ﹤0.01% 3229

Other funds holding MBX

FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
NMC
NEA Management Company Timonium, Maryland $1.59B AUM 234.06% 1-Year Est. Return
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $5.34B AUM 380.18% 1-Year Est. Return
NA
NVP Associates Menlo Park, California $328M AUM 166.51% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
PCH
Polar Capital Holdings London, United Kingdom $42.4B AUM 181.11% 1-Year Est. Return

State Street's MBX Position: Q2 2026 in Review

State Street increased its MBX Biosciences (MBX) stake by 9.8% in Q2 2026, buying an estimated $2.7M and bringing the position to 864,466 shares worth $47.7M. The position accounts for ﹤0.01% of the portfolio, ranked #1873.

State Street first reported a position in MBX in Q4 2024 and has held it in 7 quarters since. 173 funds tracked by Wall St. Rank hold MBX as of Q2 2026.

  • State Street held 864,466 shares of MBX Biosciences worth $47.7M as of Q2 2026.
  • State Street bought 77,258 MBX Biosciences shares in Q2 2026, an estimated $2.7M.
  • MBX Biosciences made up ﹤0.01% of State Street's portfolio in Q2 2026, its #1873 holding.
  • State Street first reported a position in MBX Biosciences in Q4 2024 and has held it in 7 quarters since.
  • 173 funds tracked by Wall St. Rank held MBX Biosciences as of Q2 2026.

Based on State Street's 13F filing for Q2 2026, filed 7 Aug 2026.