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ROCKWOOD RESEARCH · A CORPORATE FILINGS WEBSITE|STRAIGHT FROM THE SOURCE · SEC EDGAR|SPONSOREDYour message on this tape — bid on the Rockwood Ad Exchange · Rockwood Ad Exchange|
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MKSI

MKS INC

Industrial Instruments For Measurement, Display, and Control · SIC 3823CIK 1049502Held by 12 tracked managersEDGAR filings ↗10-K/10-Q ↗

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12 managers · Q2 2026 13F
Sachem Head Capital Management
Sachem Head Capital ManagementPosition history →
7.5%
NEW
Light Street Capital Management
Light Street Capital ManagementPosition history →
5.4%
(15.1%)
Whale Rock Capital Management
Whale Rock Capital ManagementPosition history →
4.5%
(2.7%)
Royce & Associates
Royce & AssociatesPosition history →
0.94%
(35.2%)
Glenview Capital Management
Glenview Capital ManagementPosition history →
0.88%
NEW
Capital World Investors
Capital World InvestorsPosition history →
0.07%
+7.0%
Infrastructure Capital Advisors
Infrastructure Capital AdvisorsPosition history →
0.07%
+15.1%
Bridgewater Associates
Bridgewater AssociatesPosition history →
0.05%
(28.7%)
Renaissance Technologies
Renaissance TechnologiesPosition history →
0.02%
(61.0%)
Maverick Capital
Lee AinsliePosition history →
0.01%
(71.9%)
Holocene Advisors
Holocene AdvisorsPosition history →
0.01%
NEW
WCM Investment Management
WCM Investment ManagementPosition history →
<0.01%
(49.1%)

Weight = position value ÷ the manager's total 13F long-equity value in the same filing — one definition for every row. “1st obs.” marks a position with no earlier stored 13F to compare against — it is not shown as a purchase.