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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — ALK
Institutional Holdings
Insider Transactions
US Institutional Ownership
87.8%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
11.75M
$432.0M
10.55%
+1.23M
2026-03-31
DIMENSIONAL FUND ADVISORS LP
6.35M
$233.0M
5.70%
+145.5K
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
5.16M
$189.0M
4.63%
--
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
5.05M
$185.0M
4.54%
--
2026-03-31
AMERICAN CENTURY COMPANIES INC
4.94M
$181.0M
4.43%
+607.2K
2026-03-31
FMR LLC
3.55M
$130.0M
3.19%
-2.94M
2026-03-31
Capital World Investors
3.53M
$129.0M
3.17%
--
2026-03-31
STATE STREET CORP
3.48M
$128.0M
3.13%
+62.7K
2026-03-31
FRONTIER CAPITAL MANAGEMENT CO LLC
3.37M
$124.0M
3.03%
+1.09M
2026-03-31
PRIMECAP MANAGEMENT CO/CA/
3.25M
$119.0M
2.92%
-10.5K
2026-03-31
MASSACHUSETTS FINANCIAL SERVICES CO /MA/
2.87M
$105.0M
2.58%
-92.7K
2026-03-31
MORGAN STANLEY
2.80M
$102.0M
2.51%
+878.2K
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
2.15M
$79.0M
1.93%
-21
2026-03-31
MARSHALL WACE, LLP
1.97M
$72.0M
1.77%
+1.78M
2026-03-31
CITADEL ADVISORS LLC
1.90M
$69.0M
1.71%
-1.40M
2026-03-31
SEMPER AUGUSTUS INVESTMENTS GROUP LLC
1.70M
$62.0M
1.52%
+1.29M
2026-03-31
UBS Group AG
1.66M
$61.0M
1.50%
+618.8K
2026-03-31
PAR CAPITAL MANAGEMENT INC
1.58M
$58.0M
1.42%
--
2026-03-31
AMERIPRISE FINANCIAL INC
1.42M
$52.0M
1.28%
-476.9K
2026-03-31
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
1.26M
$46.0M
1.13%
+45.0K
2026-03-31
MILLENNIUM MANAGEMENT LLC
1.19M
$43.0M
1.07%
+784.4K
2026-03-31
JANE STREET GROUP, LLC
1.08M
$39.0M
0.97%
+720.5K
2026-03-31
BANK OF AMERICA CORP /DE/
965.5K
$35.0M
0.87%
-577.4K
2026-03-31
NORTHERN TRUST CORP
902.8K
$33.0M
0.81%
-8.8K
2026-03-31
GOLDMAN SACHS GROUP INC
894.9K
$32.0M
0.80%
+407.4K
2026-03-31
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