주식회사 MKS
DE ˙ DB ˙ US55306N1046
€279.60 ↓ -5.10 (-1.79%)
2026-06-05
주가
SecurityDE:MKT / MKS Inc.
InstitutionState Street Corp
Latest Disclosed Ownership2,057,732 shares
Latest Disclosed Value $ 472,887,391
State Street Corp reports 1.99% increase in ownership of MKT / MKS Inc.

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 2,057,732 shares of MKS Inc. (DE:MKT) valued at $380,371,760 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 2,017,590 shares of MKS Inc.. This represents a change in shares of 1.99% during the quarter. The current value of the position is $575,341,867 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 2,057,732 40,142 1.99 472,887 46.67 0.0163
2026-02-13 2025-12-31 13F MKS COM 55306N104 2,017,590 -26,367 -1.29 322,411 27.44 0.0108
2025-11-14 2025-09-30 13F MKS COM 55306N104 2,043,957 -13,728 -0.67 252,981 23.74 0.0088
2025-08-14 2025-06-30 13F MKS COM 55306N104 2,057,685 -25,027 -1.20 204,452 22.48 0.0077
2025-05-15 2025-03-31 13F MKS INSTRS COM 55306N104 2,082,712 13,132 0.63 166,929 -22.73 0.0069
2025-02-14 2024-12-31 13F MKS INSTRS COM 55306N104 2,069,580 114,699 5.87 216,043 1.66 0.0085
2024-11-14 2024-09-30 13F MKS INSTRS COM 55306N104 1,954,881 65,200 3.45 212,515 -13.88 0.0086
2024-08-14 2024-06-30 13F MKS INSTRS COM 55306N104 1,889,681 -3,827 -0.20 246,755 -2.02 0.0108
2024-05-15 2024-03-31 13F MKS INSTRS COM 55306N104 1,893,508 65,246 3.57 251,837 33.90 0.0113
2024-02-14 2023-12-31 13F MKS INSTRS COM 55306N104 1,828,262 61,779 3.50 188,073 23.03 0.0091
2023-11-14 2023-09-30 13F MKS INSTRS COM 55306N104 1,766,483 132,428 8.10 152,871 -13.46 0.0085
2023-08-14 2023-06-30 13F MKS INSTRS COM 55306N104 1,634,055 23,936 1.49 176,641 23.80 0.0093
2023-05-15 2023-03-31 13F MKS INSTRS COM 55306N104 1,610,119 26,581 1.68 142,689 6.35 0.0081
2023-05-15 2022-12-31 13F/A-99 MKS INSTRS COM 55306N104 1,583,538 53,210 3.48 134,173 6.09 0.0079
2023-05-15 2022-12-31 13F MKS INSTRS COM 55306N104 1,583,538 53,210 134,173 0.0079
2022-11-15 2022-09-30 13F MKS INSTRS COM 55306N104 1,530,328 61,377 4.18 126,466 -16.11 0.0080
2022-08-15 2022-06-30 13F MKS INSTRS COM 55306N104 1,468,951 3,263 0.22 150,758 -31.43 0.0090
2022-05-16 2022-03-31 13F MKS INSTRS COM 55306N104 1,465,688 57,707 4.10 219,853 -10.35 0.0109
2022-02-14 2021-12-31 13F MKS INSTRS COM 55306N104 1,407,981 25,453 1.84 245,228 17.54 0.0116
2021-11-15 2021-09-30 13F MKS INSTRS COM 55306N104 1,382,528 -12,165 -0.87 208,637 -15.94 0.0110
2021-08-16 2021-06-30 13F MKS INSTRS COM 55306N104 1,394,693 123,917 9.75 248,186 5.33 0.0131
2021-07-09 2021-03-31 13F/A-1 MKS INSTRS COM 55306N104 1,270,776 -6,297 -0.49 235,627 22.64 0.0135
2021-05-17 2021-03-31 13F MKS INSTRS COM 55306N104 1,270,776 -6,297 235,627 0.0135
2021-02-16 2020-12-31 13F MKS INSTRS COM 55306N104 1,277,073 20,186 1.61 192,136 39.95 0.0118
2020-11-10 2020-09-30 13F MKS INSTRS COM 55306N104 1,256,887 -68,387 -5.16 137,290 -8.52 0.0094
2020-08-14 2020-06-30 13F MKS INSTRS COM 55306N104 1,325,274 -673 -0.05 150,074 38.96 0.0109
2020-06-19 2020-03-31 13F/A-1 MKS INSTRS COM 55306N104 1,325,947 -32,724 -2.41 107,998 -27.74 0.0094
2020-05-11 2020-03-31 13F MKS INSTRS COM 55306N104 1,325,947 -32,724 107,998 9,484.3990
2020-02-06 2019-12-31 13F MKS INSTRUMENT COM 55306N104 1,358,671 9,545 0.71 149,467 20.06 0.0102
2019-11-14 2019-09-30 13F MKS INSTRUMENT COM 55306N104 1,349,126 -17,682 -1.29 124,497 16.94 0.0093
2019-08-14 2019-06-30 13F MKS INSTRUMENT COM 55306N104 1,366,808 -8,825 -0.64 106,461 -16.83 0.0079
2019-05-15 2019-03-31 13F MKS INSTRUMENT COM 55306N104 1,375,633 70,893 5.43 128,003 51.84 0.0100
2019-02-12 2018-12-31 13F MKS INSTRUMENT COM 55306N104 1,304,740 -138,525 -9.60 84,299 -27.12 0.0077
2018-11-09 2018-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,443,265 19,331 1.36 115,667 -15.12 0.0089
2018-08-14 2018-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,423,934 -389,581 -21.48 136,269 -35.03 0.0114
2018-05-15 2018-03-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,813,515 -43,007 -2.32 209,731 19.54 0.0178
2018-02-14 2017-12-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,856,522 524,083 39.33 175,446 39.41 0.0141
2017-11-14 2017-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,332,439 -17,720 -1.31 125,849 38.50 0.0109
2017-08-14 2017-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,350,159 63,140 4.91 90,865 2.69 0.0080
2017-05-15 2017-03-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,287,019 38,586 3.09 88,488 19.32 0.0079
2017-02-09 2016-12-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,248,433 81,162 6.95 74,160 27.75 0.0070
2017-01-13 2016-09-30 13F/A-1 MKS INSTRUMENTS Common equity shares 55306N104 1,167,271 89,608 8.32 58,050 25.10 0.0059
2016-11-14 2016-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,167,271 58,050
2016-08-12 2016-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,077,663 6,064 0.57 46,404 15.01 0.0050
2016-05-20 2016-03-31 13F/A-1 MKS INSTRUMENTS Common equity shares 55306N104 1,071,599 7,134 0.67 40,347 5.29 0.0044
2016-05-12 2016-03-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,071,599 40,347
2016-02-16 2015-12-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,064,465 29,621 2.86 38,320 10.43 0.0042
2015-11-16 2015-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,034,844 6,214 0.60 34,701 -11.08 0.0040
2015-08-13 2015-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,028,630 -22,225 -2.11 39,026 9.85 0.0042
2015-05-15 2015-03-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,050,855 24,623 2.40 35,527 -5.43 0.0036
2015-02-11 2014-12-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,026,232 -3,307 -0.32 37,565 9.31 0.0037
2014-11-12 2014-09-30 13F/A-1 MKS INSTRUMENTS Common equity shares 55306N104 1,029,539 -36,426 -3.42 34,367 3.20 0.0037
2014-11-10 2014-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,029,539 34,367
2014-08-12 2014-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,065,965 -20,822 -1.92 33,302 2.50 0.0036
2014-05-15 2014-03-31 13F/A-1 MKS INSTRUMENTS Common equity shares 55306N104 1,086,787 9,951 0.92 32,491 0.77 0.0037
2014-05-13 2014-03-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,086,787 32,491
2014-02-06 2013-12-31 13F/A-1 MKS INSTRUMENTS Common equity shares 55306N104 1,076,836 -10,114 -0.93 32,244 11.56 0.0036
2014-02-06 2013-12-31 13F MKS INSTRUMENTS Common equity shares 55306N104 1,077,413 27,774
2013-11-12 2013-09-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,086,950 -3,042 -0.28 28,902 -0.09 0.0036
2013-08-08 2013-06-30 13F MKS INSTRUMENTS Common equity shares 55306N104 1,089,992 1,089,992 28,929 0.0038
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.