MKS INC.
MKSI·55306N104·US·Common Stock·Technology - Scientific & Technical Instruments-13D/G
MKSI (MKS INC.) is held by 262 institutional investors as of Q2 2026. Largest holders: BlackRock, Inc. ($3.1B), Invesco Ltd. ($2.1B), VANGUARD PORTFOLIO MANAGEMENT LLC ($1.6B). Net institutional sentiment: Mixed. In Q2 2026, 1 member of Congress and 146 funds bought MKSI.
262
Holders
(20 Elite)
$26.3B
Total Value
56% (259)
Consensus
146 buying - 113 selling
13F: Insider & Congress: Updated regularly
Who's Trading
Source dates: Price Oct 16, 2026 · Insiders Sep 2, 2026 · Activists Sep 3, 2026 · Congress Nov 21, 2025
InsiderMEMora ElizabethSell $75KSep 1, 2026
InsiderLTLee John Tseng-ChungSell $3.0MAug 14, 2026
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Top Holders
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Data sourced from four public-disclosure sources: SEC 13F, Form 4, 13D/13G, and House/Senate STOCK Act disclosures. Not financial advice. Full disclaimer