AllianceBernstein
MBX

AllianceBernstein’s MBX Biosciences MBX Stock Holding History

AllianceBernstein’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 		$962K Buy
30,500
+2,600
+9% +$88.4K ﹤0.01% 2356
2025
Q4 		$880K Buy
27,900
+17,400
+166% +$422K ﹤0.01% 2396
2025
Q3 		$184K Hold
10,500
– – ﹤0.01% 3102
2025
Q2 		$120K Buy
+10,500
New +$107K ﹤0.01% 3146

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

AllianceBernstein's MBX Position: Q1 2026 in Review

AllianceBernstein increased its MBX Biosciences (MBX) stake by 9.3% in Q1 2026, buying an estimated $88.4K and bringing the position to 30,500 shares worth $962K. The position accounts for ﹤0.01% of the portfolio, ranked #2356.

AllianceBernstein first reported a position in MBX in Q2 2025 and has held it in 4 quarters since. 157 funds tracked by Wall St. Rank hold MBX as of Q1 2026.

  • AllianceBernstein held 30,500 shares of MBX Biosciences worth $962K as of Q1 2026.
  • AllianceBernstein bought 2,600 MBX Biosciences shares in Q1 2026, an estimated $88.4K.
  • MBX Biosciences made up ﹤0.01% of AllianceBernstein's portfolio in Q1 2026, its #2356 holding.
  • AllianceBernstein first reported a position in MBX Biosciences in Q2 2025 and has held it in 4 quarters since.
  • 157 funds tracked by Wall St. Rank held MBX Biosciences as of Q1 2026.

Based on AllianceBernstein's 13F filing for Q1 2026, filed 15 May 2026.