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Overview
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Business Summary
Filings
Ownership
Valuation
Ownership — MKSI
Institutional Holdings
Insider Transactions
US Institutional Ownership
99.3%
Institution
Shares
Value
Ownership %
Change
Filing Date
BlackRock, Inc.
6.64M
$1.53B
9.87%
+502.9K
2026-03-31
Invesco Ltd.
3.72M
$855.0M
5.53%
-134.1K
2026-03-31
VANGUARD PORTFOLIO MANAGEMENT LLC
3.69M
$846.0M
5.48%
--
2026-03-31
VANGUARD CAPITAL MANAGEMENT LLC
3.01M
$692.0M
4.48%
--
2026-03-31
STATE STREET CORP
2.06M
$472.0M
3.06%
+40.1K
2026-03-31
Capital International Investors
1.97M
$452.0M
2.93%
-1.27M
2026-03-31
FMR LLC
1.93M
$444.0M
2.87%
-1.26M
2026-03-31
WELLINGTON MANAGEMENT GROUP LLP
1.83M
$421.0M
2.72%
-718.9K
2026-03-31
PRICE T ROWE ASSOCIATES INC /MD/
1.70M
$390.0M
2.53%
-1.05M
2026-03-31
Point72 Asset Management, L.P.
1.61M
$370.0M
2.39%
+985.6K
2026-03-31
GEODE CAPITAL MANAGEMENT, LLC
1.54M
$353.0M
2.29%
+285.3K
2026-03-31
Aspex Management (HK) Ltd
1.54M
$353.0M
2.29%
--
2026-03-31
NEUBERGER BERMAN GROUP LLC
1.43M
$329.0M
2.13%
-27.7K
2026-03-31
UBS Group AG
1.34M
$307.0M
1.99%
+108.5K
2026-03-31
Whale Rock Capital Management LLC
1.31M
$300.0M
1.94%
--
2026-03-31
Capital World Investors
1.28M
$293.0M
1.90%
--
2026-03-31
WESTFIELD CAPITAL MANAGEMENT CO LP
1.05M
$240.0M
1.56%
+207.0K
2026-03-31
CITADEL ADVISORS LLC
1.03M
$237.0M
1.54%
+487.4K
2026-03-31
MILLENNIUM MANAGEMENT LLC
894.4K
$205.0M
1.33%
+77.1K
2026-03-31
VICTORY CAPITAL MANAGEMENT INC
878.8K
$201.0M
1.31%
-1.68M
2026-03-31
CHARLES SCHWAB INVESTMENT MANAGEMENT INC
866.6K
$199.0M
1.29%
-4.0K
2026-03-31
DIMENSIONAL FUND ADVISORS LP
835.3K
$191.0M
1.24%
-282.1K
2026-03-31
Bank of New York Mellon Corp
832.1K
$191.0M
1.24%
+43.5K
2026-03-31
JANE STREET GROUP, LLC
795.0K
$182.0M
1.18%
-140.5K
2026-03-31
AQR CAPITAL MANAGEMENT LLC
616.5K
$136.0M
0.92%
+419.8K
2026-03-31
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