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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — ALNY
Institutional Holdings
Insider Transactions
US Institutional Ownership
90.7%
Institution
Shares
Value
Ownership %
Change
Filing Date
FMR LLC
14.58M
$4.82B
11.01%
-1.32M
2026-03-31
Capital World Investors
10.80M
$3.57B
8.16%
-5.50M
2026-03-31
BlackRock, Inc.
10.44M
$3.46B
7.89%
+44.0K
2026-03-31
Capital Research Global Investors
9.47M
$3.13B
7.15%
+2.69M
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
6.49M
$2.15B
4.90%
--
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
5.95M
$1.97B
4.49%
--
2026-03-31
T. Rowe Price Investment Management, Inc.
5.19M
$1.72B
3.92%
+4.04M
2026-03-31
STATE STREET CORP
3.32M
$1.10B
2.51%
+93.7K
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
2.66M
$884.0M
2.01%
+9.7K
2026-03-31
BAILLIE GIFFORD & CO
2.49M
$825.0M
1.88%
-107.1K
2026-03-31
WELLINGTON MANAGEMENT GROUP LLP
1.94M
$640.0M
1.46%
+307.0K
2026-03-31
Dodge & Cox
1.93M
$638.0M
1.46%
-35.2K
2026-03-31
AMERICAN CENTURY COMPANIES INC
1.80M
$596.0M
1.36%
+317.2K
2026-03-31
D. E. Shaw & Co., Inc.
1.47M
$487.0M
1.11%
+630.9K
2026-03-31
PRICE T ROWE ASSOCIATES INC /MD/
1.43M
$474.0M
1.08%
-270.1K
2026-03-31
Clearbridge Investments, LLC
1.36M
$448.0M
1.02%
+759.0K
2026-03-31
Orbis Allan Gray Ltd
1.33M
$441.0M
1.01%
-283.4K
2026-03-31
Invesco Ltd.
1.29M
$427.0M
0.98%
-874.1K
2026-03-31
MARSHALL WACE, LLP
1.10M
$363.0M
0.83%
+549.4K
2026-03-31
MORGAN STANLEY
1.00M
$331.0M
0.76%
+32.5K
2026-03-31
BANK OF AMERICA CORP /DE/
966.9K
$319.0M
0.73%
+281.7K
2026-03-31
Legal & General Group Plc
934.9K
$309.0M
0.71%
-26.6K
2026-03-31
AQR CAPITAL MANAGEMENT LLC
913.1K
$297.0M
0.69%
-6.9K
2026-03-31
NORTHERN TRUST CORP
858.1K
$283.0M
0.65%
+378
2026-03-31
VANGUARD FIDUCIARY TRUST CO
840.9K
$278.0M
0.64%
--
2026-03-31
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