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Filings
Ownership
Valuation
Ownership — INSM
Institutional Holdings
Insider Transactions
US Institutional Ownership
100.0%
Institution
Shares
Value
Ownership %
Change
Filing Date
FMR LLC
16.14M
$1.72B
7.40%
+2.98M
2026-06-30
BlackRock, Inc.
15.81M
$1.69B
7.24%
-870.2K
2026-06-30
JPMORGAN CHASE & CO
10.43M
$1.09B
4.78%
-12.77M
2026-06-30
VANGUARD PORTFOLIO MANAGEMENT LLC
10.41M
$1.11B
4.77%
+36.2K
2026-06-30
VANGUARD CAPITAL MANAGEMENT LLC
9.79M
$1.04B
4.49%
+148.7K
2026-06-30
BAKER BROS. ADVISORS LP
8.80M
$937.0M
4.03%
+1.38M
2026-06-30
Capital International Investors
8.24M
$878.0M
3.77%
+2.64M
2026-06-30
Darwin Global Management, Ltd.
6.43M
$673.0M
2.95%
-10.37M
2026-06-30
AMERIPRISE FINANCIAL INC
6.18M
$658.0M
2.83%
+3.12M
2026-06-30
Orbis Allan Gray Ltd
6.08M
$647.0M
2.78%
+4.20M
2026-06-30
STATE STREET CORP
6.05M
$645.0M
2.77%
+500.5K
2026-06-30
D. E. Shaw & Co., Inc.
5.94M
$633.0M
2.72%
+295.3K
2026-06-30
Artisan Partners Limited Partnership
5.44M
$580.0M
2.49%
-1.09M
2026-06-30
RTW INVESTMENTS, LP
4.84M
$516.0M
2.22%
--
2026-06-30
GEODE CAPITAL MANAGEMENT, LLC
4.22M
$448.0M
1.93%
-230.2K
2026-06-30
PRICE T ROWE ASSOCIATES INC /MD/
3.41M
$363.0M
1.56%
+312.5K
2026-06-30
NORGES BANK
3.38M
$360.0M
1.55%
+466.7K
2026-06-30
CITADEL ADVISORS LLC
3.19M
$339.0M
1.46%
+574.8K
2026-06-30
MILLENNIUM MANAGEMENT LLC
2.93M
$312.0M
1.34%
+1.63M
2026-06-30
Duquesne Family Office LLC
2.77M
$295.0M
1.27%
+1.62M
2026-06-30
Jupiter Topco LLC
2.61M
$277.0M
1.19%
--
2026-06-30
UBS Group AG
2.59M
$275.0M
1.18%
+849.0K
2026-06-30
FRANKLIN RESOURCES INC
2.27M
$242.0M
1.04%
-344.0K
2026-06-30
GOLDMAN SACHS GROUP INC
2.26M
$241.0M
1.04%
+1.32M
2026-06-30
MAVERICK CAPITAL LTD
2.15M
$229.0M
0.99%
+1.49M
2026-06-30
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