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
Q2 		$925K Buy
31,000
+500
+2% +$17.5K ﹤0.01% 2419
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 $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

AllianceBernstein's MBX Position: Q2 2026 in Review

AllianceBernstein increased its MBX Biosciences (MBX) stake by 1.6% in Q2 2026, buying an estimated $17.5K and bringing the position to 31,000 shares worth $925K. The position accounts for ﹤0.01% of the portfolio, ranked #2419.

AllianceBernstein first reported a position in MBX in Q2 2025 and has held it in 5 quarters since. The position peaked at $962K in Q1 2026. 173 funds tracked by Wall St. Rank hold MBX as of Q2 2026.

  • AllianceBernstein held 31,000 shares of MBX Biosciences worth $925K as of Q2 2026.
  • AllianceBernstein bought 500 MBX Biosciences shares in Q2 2026, an estimated $17.5K.
  • MBX Biosciences made up ﹤0.01% of AllianceBernstein's portfolio in Q2 2026, its #2419 holding.
  • AllianceBernstein first reported a position in MBX Biosciences in Q2 2025 and has held it in 5 quarters since.
  • AllianceBernstein's MBX Biosciences position peaked at $962K in Q1 2026.
  • 173 funds tracked by Wall St. Rank held MBX Biosciences as of Q2 2026.

Based on AllianceBernstein's 13F filing for Q2 2026, filed 14 Aug 2026.