MKS Inc.
DE ˙ DB ˙ US55306N1046
279,60 € ↓ -5,10 (-1,79%)
2026-06-05
CENA AKCJI
SecurityDE:MKT / MKS Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership515,063 shares
Latest Disclosed Value $ 118,366,809
Morgan Stanley reports 12.78% decrease in ownership of MKT / MKS Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 515,063 shares of MKS Inc. (DE:MKT) valued at $95,209,396 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 590,521 shares of MKS Inc.. This represents a change in shares of -12.78% during the quarter. The current value of the position is $144,011,615 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)
2026-05-15 2026-03-31 13F MKS COM 55306N104 515,063 -75,458 -12.78 118,367 25.43 0.0071
2026-05-27 2025-12-31 13F/A-1 MKS COM 55306N104 590,521 -62,090 -9.51 94,366 16.83 0.0056
2026-02-13 2025-12-31 13F MKS COM 55306N104 590,521 -62,090 94,366 0.0056
2026-05-27 2025-09-30 13F/A-1 MKS COM 55306N104 652,611 56,186 9.42 80,774 36.30 0.0049
2025-11-14 2025-09-30 13F MKS COM 55306N104 652,611 56,186 80,774 0.0049
2025-08-15 2025-06-30 13F MKS COM 55306N104 596,425 -46,365 -7.21 59,261 15.03 0.0039
2025-05-15 2025-03-31 13F MKS INSTRS COM 55306N104 642,790 18,801 3.01 51,520 -20.91 0.0037
2025-05-15 2024-12-31 13F/A-1 MKS INSTRS COM 55306N104 623,989 38,716 6.62 65,138 2.38 0.0046
2025-02-14 2024-12-31 13F MKS INSTRS COM 55306N104 623,989 38,716 65,138 0.0046
2025-05-14 2024-09-30 13F/A-2 MKS INSTRS COM 55306N104 585,273 -54,386 -8.50 63,625 -23.83 0.0046
2025-02-14 2024-09-30 13F/A-1 MKS INSTRS COM 55306N104 585,273 -54,386 63,625 0.0046
2024-11-14 2024-09-30 13F MKS INSTRS COM 55306N104 585,273 -54,386 63,625 0.0005
2025-05-14 2024-06-30 13F/A-2 MKS INSTRS COM 55306N104 639,659 127,615 24.92 83,527 22.65 0.0065
2024-10-17 2024-06-30 13F/A-1 MKS INSTRS COM 55306N104 639,659 127,615 83,527 0.0065
2024-08-14 2024-06-30 13F MKS INSTRS COM 55306N104 639,659 127,615 83,527 0.0065
2024-10-17 2024-03-31 13F/A-2 MKS INSTRS COM 55306N104 512,044 245,345 91.99 68,102 148.23 0.0055
2024-08-16 2024-03-31 13F/A-1 MKS INSTRS COM 55306N104 512,044 245,345 68,102 0.0055
2024-05-15 2024-03-31 13F MKS INSTRS COM 55306N104 512,044 245,345 68,102 0.0055
2024-08-16 2023-12-31 13F/A-1 MKS INSTRS COM 55306N104 266,699 -72,649 -21.41 27,435 -6.58 0.0024
2024-02-13 2023-12-31 13F MKS INSTRS COM 55306N104 266,699 -72,649 27,435 0.0024
2023-11-15 2023-09-30 13F MKS INSTRS COM 55306N104 339,348 -158,498 -31.84 29,367 -45.43 0.0030
2023-08-14 2023-06-30 13F MKS INSTRS COM 55306N104 497,846 1,434 0.29 53,817 22.33 0.0053
2023-05-15 2023-03-31 13F MKS INSTRS COM 55306N104 496,412 109,198 28.20 43,992 34.09 0.0047
2023-02-14 2022-12-31 13F MKS INSTRS COM 55306N104 387,214 123,382 46.77 32,809 50.47 0.0037
2022-11-14 2022-09-30 13F MKS INSTRS COM 55306N104 263,832 25,149 10.54 21,803 -11.00 0.0030
2022-10-27 2022-06-30 13F/A-1 MKS INSTRS COM 55306N104 238,683 120,484 101.93 24,497 38.16 0.0032
2022-08-15 2022-06-30 13F MKS INSTRS COM 55306N104 238,683 120,484 24,497 0.0032
2022-10-27 2022-03-31 13F/A-1 MKS INSTRS COM 55306N104 118,199 53,740 83.37 17,731 57.95 0.0024
2022-05-13 2022-03-31 13F MKS INSTRS COM 55306N104 118,199 53,740 17,731 0.0024
2022-02-14 2021-12-31 13F MKS INSTRS COM 55306N104 64,459 -71,864 -52.72 11,226 -45.43 0.0014
2021-11-15 2021-09-30 13F MKS INSTRS COM 55306N104 136,323 44,672 48.74 20,572 26.14 0.0028
2021-08-23 2021-06-30 13F/A-1 MKS INSTRS COM 55306N104 91,651 -24,633 -21.18 16,309 -24.36 0.0022
2021-08-16 2021-06-30 13F MKS INSTRS COM 55306N104 91,651 -24,633 16,309 0.0004
2021-05-17 2021-03-31 13F MKS INSTRS COM 55306N104 116,284 50,333 76.32 21,562 117.32 0.0032
2021-02-16 2020-12-31 13F MKS INSTRS COM 55306N104 65,951 -44,099 -40.07 9,922 -17.46 0.0015
2020-11-13 2020-09-30 13F MKS INSTRS COM 55306N104 110,050 89,193 427.64 12,021 408.93 0.0023
2020-08-14 2020-06-30 13F MKS INSTRS COM 55306N104 20,857 -19,652 -48.51 2,362 -28.42 0.0005
2020-05-26 2020-03-31 13F/A-1 MKS INSTRS COM 55306N104 40,509 -5,992 -12.89 3,300 -35.50 0.0009
2020-05-15 2020-03-31 13F MKS INSTRS COM 55306N104 40,509 -5,992 3,300 253.5088
2020-02-14 2019-12-31 13F MKS INSTRUMENT COM 55306N104 46,501 17,176 58.57 5,116 89.13 0.0012
2019-11-14 2019-09-30 13F MKS INSTRUMENT COM 55306N104 29,325 -12,423 -29.76 2,705 -16.79 0.0007
2019-08-14 2019-06-30 13F MKS INSTRUMENT COM 55306N104 41,748 917 2.25 3,251 -14.42 0.0009
2019-05-15 2019-03-31 13F MKS INSTRUMENT COM 55306N104 40,831 11,643 39.89 3,799 101.43 0.0011
2019-02-14 2018-12-31 13F MKS INSTRUMENT COM 55306N104 29,188 -279,394 -90.54 1,886 -92.37 0.0006
2019-04-23 2018-09-30 13F/A-2 MKS INSTRUMENT COM 55306N104 308,582 171,478 125.07 24,734 88.51 0.0062
2018-11-20 2018-09-30 13F/A-1 MKS INSTRUMENT COM 55306N104 308,582 0 24,734 0.0062
2018-11-14 2018-09-30 13F MKS INSTRUMENT COM 55306N104 308,582 171,478 24,734
2019-04-23 2018-06-30 13F/A-1 MKS INSTRUMENT COM 55306N104 137,104 -134,450 -49.51 13,121 -58.22 0.0035
2018-08-14 2018-06-30 13F MKS INSTRUMENT COM 55306N104 137,104 -134,450 13,121
2019-04-23 2018-03-31 13F/A-1 MKS INSTRUMENT COM 55306N104 271,554 -217,681 -44.49 31,405 -32.07 0.0087
2018-05-14 2018-03-31 13F MKS INSTRUMENT COM 55306N104 271,554 -217,681 31,405
2019-04-23 2017-12-31 13F/A-1 MKS INSTRUMENT COM 55306N104 489,235 347,274 244.63 46,233 244.82 0.0127
2018-02-14 2017-12-31 13F MKS INSTRUMENT COM 55306N104 489,235 347,274 46,233
2017-11-14 2017-09-30 13F MKS INSTRUMENT COM 55306N104 141,961 -171,255 -54.68 13,408 -36.39 0.0040
2017-08-11 2017-06-30 13F MKS INSTRUMENT COM 55306N104 313,216 160,028 104.47 21,079 100.14 0.0064
2017-05-22 2017-03-31 13F/A-1 MKS INSTRUMENT COM 55306N104 153,188 -89,959 -37.00 10,532 -27.08 0.0032
2017-05-12 2017-03-31 13F MKS INSTRUMENT COM 55306N104 153,188 10,532
2017-02-22 2016-12-31 13F/A-1 MKS INSTRUMENT COM 55306N104 243,147 181,540 294.67 14,443 371.53 0.0047
2017-02-13 2016-12-31 13F MKS INSTRUMENT COM 55306N104 243,147 14,443
2016-11-10 2016-09-30 13F MKS INSTRUMENT COM 55306N104 61,607 -17,375 -22.00 3,063 -9.94 0.0010
2016-08-12 2016-06-30 13F MKS INSTRUMENT COM 55306N104 78,982 -189,712 -70.61 3,401 -66.38 0.0012
2016-05-12 2016-03-31 13F MKS INSTRUMENT COM 55306N104 268,694 177,995 196.25 10,117 209.86 0.0039
2016-02-09 2015-12-31 13F MKS INSTRUMENT COM 55306N104 90,699 -12,313 -11.95 3,265 -5.44 0.0012
2016-02-08 2015-09-30 13F/A-1 MKS INSTRUMENT COM 55306N104 103,012 62,425 153.81 3,453 124.22 0.0013
2015-11-09 2015-09-30 13F MKS INSTRUMENT COM 55306N104 103,012 3,453
2015-08-12 2015-06-30 13F MKS INSTRUMENT COM 55306N104 40,587 -36,821 -47.57 1,540 -41.15 0.0005
2015-05-14 2015-03-31 13F MKS INSTRUMENT COM 55306N104 77,408 39,930 106.54 2,617 90.74 0.0010
2015-02-13 2014-12-31 13F MKS INSTRUMENT COM 55306N104 37,478 19,472 108.14 1,372 128.29 0.0005
2014-12-16 2014-09-30 13F/A-1 MKS INSTRUMENT COM 55306N104 18,006 -18,957 -51.29 601 -45.61 0.0002
2014-11-14 2014-09-30 13F MKS INSTRUMENT COM 55306N104 18,006 601
2014-05-13 2014-03-31 13F MKS INSTRUMENT COM 55306N104 36,963 -110,403 -74.92 1,105 -74.94 0.0005
2014-02-13 2013-12-31 13F MKS INSTRUMENT COM 55306N104 147,366 56,217 61.68 4,410 81.93 0.0019
2013-11-13 2013-09-30 13F MKS INSTRS INC COM ST COM 55306N104 91,149 -14,938 -14.08 2,424 -13.89 0.0011
2013-08-08 2013-06-30 13F MKS INSTRS INC COM ST COM 55306N104 106,087 106,087 2,815 0.0014
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.