MKS Inc. Common Stock (MKSI) Ownership & Trading Activity

Institutional holders, insider transactions, and congressional trades for MKSI. 13F holdings as of 2026-06-30.

In 13F filings for the quarter ended June 30, 2026, 758 institutions reported holding MKSI, with 70.4 million shares worth $31.1 billion in aggregate.

Top Institutional Holders

InstitutionSharesValueChange
Vanguard7,314,889$3.3BINCREASED
BlackRock6,930,030$3.1BINCREASED
Invesco Ltd4,661,664$2.1BINCREASED
JPMorgan Chase3,373,844$1.4BINCREASED
Capital Group3,281,477$1.5BINCREASED

Full institutional holdings, insider history, and congressional trades for MKS Inc. Common Stock on SentiSense.