MKS Inc.
DE ˙ DB ˙ US55306N1046
279,60 € ↓ -5,10 (-1,79%)
2026-06-05
CENA AKCJI
SecurityDE:MKT / MKS Inc.
InstitutionBlackRock, Inc.
Latest Disclosed Ownership5,887,663 shares
Ownership 8.80%
BlackRock, Inc. ownership in MKT / MKS Inc.

2025-10-17 - BlackRock, Inc. has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 5,887,663 shares of MKS Inc. (DE:MKT). This represents 8.8 percent ownership of the company. In their previous filing dated 2024-11-07 , BlackRock, Inc. had reported owning 6,874,519 shares, indicating a decrease of -14.36 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2025-10-17 2025-10-17 13G/A 6,874,519 5,887,663 -14.36 8.80 -13.73
2024-11-07 2024-11-07 13G/A 6,874,519 10.20
2024-01-24 2024-01-24 13G/A 5,490,257 6,178,625 12.54 9.20 10.84
2023-02-07 2023-02-07 13G/A 5,059,771 5,490,257 8.51 8.30 -8.79
2022-02-01 2022-02-01 13G/A 5,155,288 5,059,771 -1.85 9.10 -3.19
2021-01-29 2021-01-29 13G/A 5,157,397 5,155,288 -0.04 9.40 -1.05
2020-02-05 2020-02-05 13G/A 4,960,098 5,157,397 3.98 9.50 3.26
2019-02-06 2019-02-06 13G/A 5,988,461 4,960,098 -17.17 9.20 -16.36
2018-01-23 2018-01-23 13G/A 6,159,789 5,988,461 -2.78 11.00 -4.35
2017-01-12 2017-01-12 13G/A 5,516,591 6,159,789 11.66 11.50 11.65
2016-10-07 2016-10-07 13G/A 4,942,240 5,516,591 11.62 10.30 10.75
2016-01-26 2016-01-26 13G/A 4,942,240 9.30
2015-01-22 2015-01-22 13G/A 4,626,208 8.70
2014-01-30 2014-01-30 13G/A 4,656,447 8.70
2013-02-08 2013-02-08 13G/A 4,071,587 7.74
2012-02-10 2012-02-10 13G/A 4,245,841 8.10

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-05-13 2026-03-31 13F MKS COM 55306N104 6,641,730 502,891 8.19 1,526,336 55.59 0.0020
2026-02-12 2025-12-31 13F MKS COM 55306N104 6,138,839 15,510 0.25 980,986 29.44 0.0166
2025-11-12 2025-09-30 13F MKS COM 55306N104 6,123,329 -1,193,234 -16.31 757,884 4.25 0.0133
2025-08-12 2025-06-30 13F MKS COM 55306N104 7,316,563 249,856 3.54 726,974 28.35 0.0138
2025-05-02 2025-03-31 13F MKS INSTRS COM 55306N104 7,066,707 -53,176 -0.75 566,397 -23.79 0.0119
2025-02-07 2024-12-31 13F MKS INSTRS COM 55306N104 7,119,883 266,824 3.89 743,245 -0.24 0.0150
2024-11-13 2024-09-30 13F MKS INSTRS COM 55306N104 6,853,059 240,264 3.63 744,996 -13.72 0.0156
2024-08-13 2024-06-30 13F MKS INSTRS COM 55306N104 6,612,795 201,243 3.14 863,499 1.26 0.0195
2024-05-10 2024-03-31 13F MKS INSTRS COM 55306N104 6,411,552 232,927 3.77 852,736 34.16 0.0199
2024-02-13 2023-12-31 13F MKS INSTRS COM 55306N104 6,178,625 80,880 1.33 635,595 20.45 0.0162
2023-11-13 2023-09-30 13F MKS INSTRS COM 55306N104 6,097,745 379,471 6.64 527,699 -14.63 0.0152
2023-08-11 2023-06-30 13F MKS INSTRS COM 55306N104 5,718,274 234,495 4.28 618,145 27.20 0.0170
2023-05-12 2023-03-31 13F MKS INSTRS COM 55306N104 5,483,779 -6,478 -0.12 485,972 4.47 0.0143
2023-02-13 2022-12-31 13F MKS INSTRS COM 55306N104 5,490,257 90,579 1.68 465,189 4.25 0.0146
2022-11-14 2022-09-30 13F MKS INSTRS COM 55306N104 5,399,678 106,080 2.00 446,232 -17.86 0.0152
2022-08-12 2022-06-30 13F MKS INSTRS COM 55306N104 5,293,598 65,100 1.25 543,282 -30.73 0.0174
2022-05-12 2022-03-31 13F MKS INSTRS COM 55306N104 5,228,498 168,727 3.33 784,275 -11.01 0.0211
2022-02-10 2021-12-31 13F MKS INSTRS COM 55306N104 5,059,771 -135,852 -2.61 881,260 12.40 0.0224
2021-11-09 2021-09-30 13F MKS INSTRS COM 55306N104 5,195,623 -78,313 -1.48 784,072 -16.45 0.0220
2021-08-11 2021-06-30 13F MKS INSTRS COM 55306N104 5,273,936 -156,256 -2.88 938,497 -6.79 0.0261
2021-05-07 2021-03-31 13F MKS INSTRS COM 55306N104 5,430,192 274,904 5.33 1,006,865 29.82 0.0296
2021-02-05 2020-12-31 13F MKS INSTRS COM 55306N104 5,155,288 135,161 2.69 775,613 41.45 0.0247
2020-11-06 2020-09-30 13F MKS INSTRS COM 55306N104 5,020,127 -103,340 -2.02 548,349 -5.49 0.0202
2020-08-14 2020-06-30 13F MKS INSTRS COM 55306N104 5,123,467 74,135 1.47 580,180 41.07 0.0232
2020-05-01 2020-03-31 13F MKS INSTRS COM 55306N104 5,049,332 -108,065 -2.10 411,268 -27.51 0.0201
2020-02-13 2019-12-31 13F MKS INSTRUMENT COM 55306N104 5,157,397 260,465 5.32 567,366 25.55 0.0218
2019-11-08 2019-09-30 13F MKS INSTRUMENT COM 55306N104 4,896,932 -19,476 -0.40 451,889 18.01 0.0190
2019-08-22 2019-06-30 13F/A-1 MKS INSTRUMENT COM 55306N104 4,916,408 -38,746 -0.78 382,939 -16.95 0.0164
2019-08-13 2019-06-30 13F MKS INSTRUMENT COM 55306N104 4,916,408 -38,746 382,939
2019-05-09 2019-03-31 13F MKS INSTRUMENT COM 55306N104 4,955,154 -4,944 -0.10 461,078 43.88 0.0206
2019-02-08 2018-12-31 13F MKS INSTRUMENT COM 55306N104 4,960,098 -127,387 -2.50 320,470 -21.41 0.0162
2018-11-09 2018-09-30 13F MKS INSTRUMENT COM 55306N104 5,087,485 46,856 0.93 407,762 -15.47 0.0176
2018-08-09 2018-06-30 13F MKS INSTRUMENT COM 55306N104 5,040,629 -1,101,652 -17.94 482,389 -32.09 0.0222
2018-05-09 2018-03-31 13F MKS INSTRUMENT COM 55306N104 6,142,281 153,820 2.57 710,354 25.52 0.0340
2018-02-09 2017-12-31 13F MKS INSTRUMENT COM 55306N104 5,988,461 -772,215 -11.42 565,910 -11.38 0.0269
2017-11-14 2017-09-30 13F MKS INSTRUMENT COM 55306N104 6,760,676 227,747 3.49 638,546 45.23 0.0322
2017-08-10 2017-06-30 13F MKS INSTRUMENT COM 55306N104 6,532,929 -51,968 -0.79 439,666 -2.88 0.0233
2017-05-12 2017-03-31 13F MKS INSTRUMENT COM 55306N104 6,584,897 6,571,973 50,850.92 452,712 58,846.88 0.0249
2017-02-10 2016-12-31 13F MKS INSTRUMENT COM 55306N104 12,924 -1,408 -9.82 768 7.71 0.0011
2016-11-08 2016-09-30 13F MKS INSTRUMENT COM 55306N104 14,332 332 2.37 713 18.24 0.0010
2016-08-10 2016-06-30 13F MKS INSTRUMENT COM 55306N104 14,000 10,336 282.10 603 340.15 0.0009
2016-05-10 2016-03-31 13F MKS INSTRUMENT COM 55306N104 3,664 2,081 131.46 137 140.35 0.0002
2016-02-11 2015-12-31 13F MKS INSTRUMENT COM 55306N104 1,583 342 27.56 57 35.71 0.0001
2015-11-13 2015-09-30 13F MKS INSTRUMENT COM 55306N104 1,241 -183 -12.85 42 -22.22 0.0001
2015-08-07 2015-06-30 13F MKS INSTRUMENT COM 55306N104 1,424 -63 -4.24 54 8.00 0.0001
2015-05-13 2015-03-31 13F MKS INSTRUMENT COM 55306N104 1,487 0 0.00 50 -9.09 0.0001
2015-02-09 2014-12-31 13F MKS INSTRUMENT COM 55306N104 1,487 0 0.00 55 10.00 0.0001
2014-10-29 2014-09-30 13F MKS INSTRUMENT COM 55306N104 1,487 0 0.00 50 8.70 0.0001
2014-08-06 2014-06-30 13F MKS INSTRUMENT COM 55306N104 1,487 -118 -7.35 46 -4.17 0.0001
2014-05-02 2014-03-31 13F MKS INSTRUMENT COM 55306N104 1,605 0 0.00 48 0.00 0.0001
2014-02-12 2013-12-31 13F MKS INSTRUMENT COM 55306N104 1,605 -77 -4.58 48 6.67 0.0001
2013-11-12 2013-09-30 13F MKS INSTRUMENT COM 55306N104 1,682 78 4.86 45 4.65 0.0001
2013-08-13 2013-06-30 13F MKS INSTRUMENT COM 55306N104 1,604 1,604 43 0.0001
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.