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Weiss Asset Management LP

Position in MKSI — Mks Inc

CIK 1357550 BOSTON, MA

Position in MKSI

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$326,483
-$13,421,269 QoQ
Shares Held
734
-99.3% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.01%
of 13F equity value
Holder Rank
#561
of 773 holders
Holding Since
Mar 2022
5 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in MKSI Over Time

Shares Held

Position Value (USD)

Position in Scientific & Technical Instruments

Technology · as of Jun 30, 2026

Weiss Asset Management LP holds $9,262,161 across 4 Scientific & Technical Instruments names. MKSI ranks #4 (3.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
4 MKSI
Mks Inc
This page
734 $326,483

All Filings in MKSI

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5 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $326,483 734
2025-09-30 $13,747,752 111,075
2024-09-30 $1,849,048 17,009
2023-12-31 $1,909,370 18,561
2022-03-31 $209,850 1,399