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Polaris Capital Management, LLC

Position in MKSI — Mks Inc

CIK 1316926 BOSTON, MA

Position in MKSI

as of Mar 31, 2026 · filed Apr 27, 2026
Position Value
$30,955,407
-$11,407,573 QoQ
Shares Held
134,700
-49.2% QoQ
Ownership
0.199%
of shares outstanding
% of Portfolio
2.55%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
24 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

Polaris Capital Management, LLC holds $1,920,966 across 1 Scientific & Technical Instruments name.

# Ticker Company Shares Value (USD) Open

All Filings in MKSI

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24 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $30,955,407 134,700
2025-12-31 $42,362,980 265,100
2025-09-30 $49,668,901 401,300
2025-06-30 $35,908,704 361,400
2025-03-31 $29,944,040 373,600
2024-12-31 $36,787,036 352,400
2024-09-30 $38,483,340 354,000
2024-06-30 $46,825,988 358,600
2024-03-31 $48,771,100 366,700
2023-12-31 $54,932,580 534,000
2023-09-30 $39,920,902 461,300
2023-06-30 $69,800,170 645,700
2023-03-31 $57,673,896 650,800
2022-12-31 $49,278,968 581,600
2022-09-30 $884,248 10,700
2022-06-30 $76,510,049 745,494
2022-03-31 $795,000 5,300
2021-09-30 $1,282,735 8,500
2021-06-30 $1,512,575 8,500
2021-03-31 $1,576,070 8,500
2020-12-31 $1,654,950 11,000
2020-09-30 $1,201,530 11,000
2020-06-30 $1,426,824 12,600
2020-03-31 $1,286,910 15,800