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Business Summary
Filings
Ownership
Valuation
Ownership — ARTV
Institutional Holdings
Insider Transactions
US Institutional Ownership
100.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
RA CAPITAL MANAGEMENT, L.P.
17.96M
$174.0M
55.96%
+8.10M
2026-06-30
VIKING GLOBAL INVESTORS LP
2.60M
$25.0M
8.12%
--
2026-06-30
Blackstone Inc.
2.40M
$23.0M
7.49%
--
2026-06-30
5AM Venture Management, LLC
2.35M
$22.0M
7.33%
--
2026-06-30
Venrock Adviser, LLC
2.04M
$19.0M
6.37%
+434.0K
2026-06-30
FRANKLIN RESOURCES INC
2.00M
$19.0M
6.22%
+1.48M
2026-06-30
Caligan Partners LP
1.74M
$16.0M
5.41%
--
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
981.8K
$9.0M
3.06%
+774.1K
2026-06-30
SAMSARA BIOCAPITAL, LLC
954.9K
$9.0M
2.98%
+663.2K
2026-06-30
Blue Owl Capital Holdings LP
874.5K
$8.0M
2.73%
--
2026-06-30
Propel Bio Management, LLC
696.4K
$6.0M
2.17%
+550.1K
2026-06-30
BlackRock, Inc.
694.7K
$6.0M
2.17%
+481.3K
2026-06-30
CITADEL ADVISORS LLC
609.4K
$5.0M
1.90%
+593.5K
2026-06-30
SILVERARC CAPITAL MANAGEMENT, LLC
525.0K
$5.0M
1.64%
--
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
353.8K
$3.0M
1.10%
+252.2K
2026-06-30
BOOTHBAY FUND MANAGEMENT, LLC
314.4K
$3.0M
0.98%
--
2026-06-30
Nantahala Capital Management, LLC
300.0K
$2.0M
0.93%
--
2026-06-30
Revelation Capital Management, LLC
299.3K
$2.0M
0.93%
--
2026-06-30
Alyeska Investment Group, L.P.
273.6K
$2.0M
0.85%
+173.6K
2026-06-30
ACUTA CAPITAL PARTNERS, LLC
260.4K
$2.0M
0.81%
+215.0K
2026-06-30
KVP Capital Advisors, LP
200.0K
$1.0M
0.62%
--
2026-06-30
WELLINGTON MANAGEMENT GROUP LLP
194.1K
$1.0M
0.60%
--
2026-06-30
UBS Group AG
184.0K
$1.0M
0.57%
+182.5K
2026-06-30
SEVEN GRAND MANAGERS, LLC
175.0K
$1.0M
0.55%
--
2026-06-30
STATE STREET CORP
165.8K
$1.0M
0.52%
+129.9K
2026-06-30
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