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Equibles

ALLIANCEBERNSTEIN L.P.

Position in MBX — MBX Biosciences, Inc.

CIK 1109448 NASHVILLE, TN
Back to MBX Full portfolio

Position in MBX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$1,711,200
+$800,775 QoQ
Shares Held
31,000
+1.6% QoQ
Ownership
0.064%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#70
of 172 holders
Holding Since
Jun 2025
5 quarters on record
Voting authority Sole 92% Shared 0% None 8%

Common Shares in MBX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

ALLIANCEBERNSTEIN L.P. holds $5,185,395,108 across 257 Biotechnology names. MBX ranks #105 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 VRTX
Vertex Pharmaceuticals Inc / Ma
 3,019,315 $1,499,784,339
2 ARGX
Argenx SE
 395,661 $367,082,405
3 GMAB
Genmab A/S
 8,644,877 $237,474,771
4 REGN
Regeneron Pharmaceuticals, Inc.
 292,338 $182,284,436
5 TECH
BIO-TECHNE Corp
 2,002,026 $141,443,136
6 HALO
Halozyme Therapeutics, Inc.
 1,696,538 $132,788,029
7 KYMR
Kymera Therapeutics, Inc.
 981,521 $112,551,013
8 BBIO
BridgeBio Pharma, Inc.
 1,453,504 $108,256,977

All Filings in MBX

Export CSV
5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,711,200 31,000
2026-03-31 $910,425 30,500
2025-12-31 $879,966 27,900
2025-09-30 $183,750 10,500
2025-06-30 $119,805 10,500