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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — AVLN
Institutional Holdings
Insider Transactions
US Institutional Ownership
99.5%
Institution
Shares
Value
Ownership %
Change
Filing Date
FMR LLC
5.84M
$192.0M
13.16%
--
2026-06-30
NOVO HOLDINGS A/S
3.88M
$127.0M
8.76%
--
2026-06-30
SR One Capital Management, LP
3.31M
$108.0M
7.46%
--
2026-06-30
PERCEPTIVE ADVISORS LLC
2.68M
$88.0M
6.03%
--
2026-06-30
MONTANOVA CAPITAL, LLC
2.50M
$82.0M
5.65%
--
2026-06-30
NVP ASSOCIATES, LLC
2.27M
$74.0M
5.12%
--
2026-06-30
WELLINGTON MANAGEMENT GROUP LLP
2.20M
$72.0M
4.97%
--
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
1.74M
$57.0M
3.91%
--
2026-06-30
Catalio Capital Management, LP
1.68M
$55.0M
3.78%
--
2026-06-30
T. Rowe Price Investment Management, Inc.
1.60M
$52.0M
3.62%
--
2026-06-30
EVENTIDE ASSET MANAGEMENT, LLC
1.38M
$45.0M
3.10%
--
2026-06-30
Bellevue Group AG
1.35M
$44.0M
3.05%
--
2026-06-30
BlackRock, Inc.
977.3K
$32.0M
2.20%
--
2026-06-30
Pivotal bioVenture Partners Investment Advisor LLC
966.8K
$31.0M
2.18%
--
2026-06-30
CITADEL ADVISORS LLC
959.1K
$31.0M
2.16%
--
2026-06-30
ANDERA PARTNERS
929.8K
$30.0M
2.10%
--
2026-06-30
JENNISON ASSOCIATES LLC
812.7K
$26.0M
1.83%
--
2026-06-30
BRAIDWELL LP
801.4K
$26.0M
1.81%
--
2026-06-30
TPG GP A, LLC
773.1K
$25.0M
1.74%
--
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
739.8K
$24.0M
1.67%
--
2026-06-30
DEERFIELD MANAGEMENT COMPANY, L.P.
731.0K
$24.0M
1.65%
--
2026-06-30
Rock Springs Capital Management LP
662.9K
$21.0M
1.50%
--
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
434.6K
$14.0M
0.98%
--
2026-06-30
Soleus Capital Management, L.P.
419.0K
$13.0M
0.95%
--
2026-06-30
INFINITUM ASSET MANAGEMENT, LLC
411.4K
$13.0M
0.93%
--
2026-06-30
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