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Business Summary
Filings
Ownership
Valuation
Ownership — MBX
Institutional Holdings
Insider Transactions
US Institutional Ownership
100.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
Frazier Life Sciences Management, L.P.
6.65M
$367.0M
13.87%
--
2026-06-30
FMR LLC
5.32M
$293.0M
11.10%
+2.39M
2026-06-30
WELLINGTON MANAGEMENT GROUP LLP
4.98M
$274.0M
10.38%
+1.79M
2026-06-30
NEA Management Company, LLC
3.61M
$199.0M
7.54%
--
2026-06-30
ORBIMED ADVISORS LLC
3.43M
$189.0M
7.15%
-209.2K
2026-06-30
BlackRock, Inc.
3.32M
$183.0M
6.93%
+382.3K
2026-06-30
Paradigm Biocapital Advisors LP
2.51M
$138.0M
5.23%
--
2026-06-30
NVP ASSOCIATES, LLC
2.14M
$117.0M
4.46%
--
2026-06-30
Deep Track Capital, LP
1.73M
$95.0M
3.61%
-1.02M
2026-06-30
Polar Capital Holdings Plc
1.61M
$88.0M
3.35%
-13.7K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
1.48M
$81.0M
3.08%
-204
2026-06-30
Aaron Wealth Advisors LLC
1.17M
$64.0M
2.44%
-377
2026-06-30
Driehaus Capital Management LLC
1.06M
$58.0M
2.20%
+38.4K
2026-06-30
Kynam Capital Management, LP
934.8K
$51.0M
1.95%
--
2026-06-30
Woodline Partners LP
900.1K
$49.0M
1.88%
+29
2026-06-30
EVENTIDE ASSET MANAGEMENT, LLC
873.5K
$48.0M
1.82%
-16.5K
2026-06-30
STATE STREET CORP
864.5K
$47.0M
1.80%
+77.3K
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
814.8K
$44.0M
1.70%
-214.2K
2026-06-30
Parkman Healthcare Partners LLC
800.2K
$44.0M
1.67%
+136
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
773.1K
$42.0M
1.61%
+102.7K
2026-06-30
BRAIDWELL LP
710.9K
$39.0M
1.48%
-781.6K
2026-06-30
TCG Crossover Management, LLC
650.0K
$35.0M
1.36%
--
2026-06-30
Cormorant Asset Management, LP
550.0K
$30.0M
1.15%
-570.0K
2026-06-30
Soleus Capital Management, L.P.
515.3K
$28.0M
1.07%
+336.4K
2026-06-30
GOLDMAN SACHS GROUP INC
459.0K
$25.0M
0.96%
+1.1K
2026-06-30
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