Susquehanna International Group
MBX

Susquehanna International Group’s MBX Biosciences MBX Stock Holding History

Susquehanna International Group’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 		– Sell
-228,000
Closed -$7.19M – 14359
2025
Q4 		$7.19M Sell
228,000
-258,800
-53% -$6.28M ﹤0.01% 3493
2025
Q3 		$8.52M Buy
486,800
+430,200
+760% +$5.75M ﹤0.01% 3251
2025
Q2 		$646K Buy
+56,600
New +$577K ﹤0.01% 8576

Other funds holding MBX

FLSM
Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return
O
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
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Fidelity Investments
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
NA
NVP Associates Menlo Park, California $176M AUM 208.78% 1-Year Est. Return
PCH
Polar Capital Holdings London, United Kingdom $28.2B AUM 115.26% 1-Year Est. Return
B
Braidwell Stamford, Connecticut $3B AUM 46.72% 1-Year Est. Return

Susquehanna International Group's MBX Position: Q1 2026 in Review

Susquehanna International Group reduced its MBX Biosciences (MBX) stake by 88% in Q1 2026, selling an estimated $2.28M and leaving 9,487 shares worth $283K. The position accounts for ﹤0.01% of the portfolio, ranked #10988.

Susquehanna International Group first reported a position in MBX in Q1 2025 and has held it in 4 quarters since. The position peaked at $2.41M in Q4 2025. 157 funds tracked by Wall St. Rank hold MBX as of Q1 2026.

  • Susquehanna International Group held 9,487 shares of MBX Biosciences worth $283K as of Q1 2026.
  • Susquehanna International Group sold 67,041 MBX Biosciences shares in Q1 2026, an estimated $2.28M.
  • MBX Biosciences made up ﹤0.01% of Susquehanna International Group's portfolio in Q1 2026, its #10988 holding.
  • Susquehanna International Group first reported a position in MBX Biosciences in Q1 2025 and has held it in 4 quarters since.
  • Susquehanna International Group's MBX Biosciences position peaked at $2.41M in Q4 2025.
  • 157 funds tracked by Wall St. Rank held MBX Biosciences as of Q1 2026.

Based on Susquehanna International Group's 13F filing for Q1 2026, filed 15 May 2026.