MKS Inc.
DE ˙ DB ˙ US55306N1046
279,60 EUR ↓ -5,10 (-1,79%)
2026-06-05
PREȚUL ACȚIUNILOR
SecurityDE:MKT / MKS Inc.
InstitutionRobeco Schweiz AG
Latest Disclosed Ownership45,600 shares
Latest Disclosed Value $ 10,479,336
Robeco Schweiz AG reports 13.36% decrease in ownership of MKT / MKS Inc.

On May 7, 2026 - Robeco Schweiz AG filed a 13F-HR form disclosing ownership of 45,600 shares of MKS Inc. (DE:MKT) valued at $8,429,160 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 52,630 shares of MKS Inc.. This represents a change in shares of -13.36% during the quarter. The current value of the position is $12,749,760 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-07 2026-03-31 13F MKS COM 55306N104 45,600 -7,030 -13.36 10,479 24.60 0.2216
2026-02-03 2025-12-31 13F MKS COM 55306N104 52,630 52,630 8,410 0.1884
2020-02-19 2019-12-31 13F/A-1 MKS INSTRUMENT COM 55306N104 0 -1,000 -100.00 0 -100.00
2020-02-13 2019-12-31 13F MKS INSTRUMENT COM 55306N104 0 0
2019-10-18 2019-09-30 13F MKS INSTRUMENT COM 55306N104 1,000 -300 -23.08 91 -10.78 0.0039
2019-07-31 2019-06-30 13F MKS INSTRUMENT COM 55306N104 1,300 0 0.00 102 -15.70 0.0043
2019-05-14 2019-03-31 13F MKS INSTRUMENT COM 55306N104 1,300 -200 -13.33 121 26.04 0.0050
2019-02-01 2018-12-31 13F MKS INSTRUMENT COM 55306N104 1,500 -800 -34.78 96 -48.11 0.0044
2018-10-30 2018-09-30 13F MKS INSTRUMENT COM 55306N104 2,300 0 0.00 185 -14.35 0.0072
2018-08-09 2018-06-30 13F MKS INSTRUMENT COM 55306N104 2,300 -50 -2.13 216 -20.59 0.0092
2018-05-16 2018-03-31 13F MKS INSTRUMENT COM 55306N104 2,350 0 0.00 272 20.89 0.0126
2018-02-14 2017-12-31 13F MKS INSTRUMENT COM 55306N104 2,350 0 0.00 225 1.81 0.0149
2017-11-09 2017-09-30 13F MKS INSTRUMENT COM 55306N104 2,350 -150 -6.00 221 30.77 0.0170
2017-08-15 2017-06-30 13F MKS INSTRUMENT COM 55306N104 2,500 -1,700 -40.48 169 -41.52 0.0142
2017-05-10 2017-03-31 13F MKS INSTRUMENT COM 55306N104 4,200 900 27.27 289 46.70 0.0246
2017-01-10 2016-12-31 13F/A-1 MKS INSTRUMENT COM 55306N104 3,300 448 15.71 197 39.72 0.0181
2016-11-15 2016-09-30 13F MKS INSTRUMENT COM 55306N104 2,852 2,852 141 0.0122
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.