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VANGUARD PORTFOLIO MANAGEMENT LLC

Position in MKSI — Mks Inc

CIK 2100121 MALVERN, PA

Position in MKSI

as of Jun 30, 2026 · filed Aug 13, 2026
Position Value
$1,649,019,049
+$802,055,903 QoQ
Shares Held
3,707,327
+0.6% QoQ
Ownership
5.48%
of shares outstanding
% of Portfolio
0.07%
of 13F equity value
Holder Rank
#3
of 773 holders
Holding Since
Mar 2026
2 quarters on record
Voting authority Sole 0% Shared 0% None 100%

Common Shares in MKSI Over Time

Shares Held

Position Value (USD)

Position in Scientific & Technical Instruments

Technology · as of Jun 30, 2026

VANGUARD PORTFOLIO MANAGEMENT LLC holds $16,580,811,885 across 17 Scientific & Technical Instruments names. MKSI ranks #4 (9.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MKSI
Mks Inc
This page
3,707,327 $1,649,019,049

All Filings in MKSI

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2 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $1,649,019,049 3,707,327
2026-03-31 $846,963,146 3,685,493