Vanguard Group Inc ownership in MKT / MKS Inc.

MKS Inc.

DE ˙ DB ˙ US55306N1046

€279,60 ↓ -5,10 (-1,79%)

2026-06-05
HİSSE FİYATI

Security	DE:MKT / MKS Inc.
Institution	Vanguard Group Inc
Latest Disclosed Ownership	7,752,097 shares
Ownership	11.54%

2025-10-31 - Vanguard Group Inc has filed an SCHEDULE 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 7,752,097 shares of MKS Inc. (DE:MKT). This represents 11.54 percent ownership of the company. In their previous filing dated 2024-02-13 , Vanguard Group Inc had reported owning 6,892,941 shares, indicating an increase of 12.46 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)
2025-10-31	2025-10-31	13G/A	6,892,941	7,752,097	12.46	11.54	11.93
2024-02-13	2024-02-13	13G/A	6,695,447	6,892,941	2.95	10.31	2.79
2023-06-09	2023-06-09	13G/A	6,344,398	6,695,447	5.53	10.03	5.14
2023-02-09	2023-02-09	13G/A	5,643,401	6,344,398	12.42	9.54	-6.29
2022-02-10	2022-02-10	13G/A	5,600,528	5,643,401	0.77	10.18	0.59
2021-06-10	2021-06-10	13G/A	5,088,655	5,600,528	10.06	10.12	9.64
2021-02-10	2021-02-10	13G/A	5,080,203	5,088,655	0.17	9.23	-0.86
2020-02-12	2020-02-12	13G/A	4,934,729	5,080,203	2.95	9.31	1.86
2019-02-11	2019-02-11	13G/A	4,703,545	4,934,729	4.92	9.14	5.54
2018-02-09	2018-02-09	13G/A	4,486,019	4,703,545	4.85	8.66	3.46
2017-02-10	2017-02-10	13G/A	3,958,023	4,486,019	13.34	8.37	12.65
2016-02-10	2016-02-10	13G/A		3,958,023		7.43
2015-02-11	2015-02-11	13G/A		3,505,872		6.60
2014-02-11	2014-02-11	13G/A		3,444,417		6.47
2013-02-12	2013-02-12	13G/A		3,099,591		5.88
2012-02-10	2012-02-10	13G		2,748,273		5.24

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	Reported Shares	ΔShares	ΔShares (%)	Reported Value (x1000)	ΔValue (%)	Alloc (%)
2026-01-29	2025-12-31	13F	MKS	COM	55306N104	7,487,305	-264,792	-3.42	1,196,471	24.70	0.0173
2025-11-07	2025-09-30	13F	MKS	COM	55306N104	7,752,097	295,480	3.96	959,477	29.50	0.0144
2025-08-11	2025-06-30	13F	MKS	COM	55306N104	7,456,617	6,002	0.08	740,889	24.07	0.0120
2025-05-09	2025-03-31	13F	MKS INSTRS	COM	55306N104	7,450,615	4,659	0.06	597,167	-23.17	0.0108
2025-02-11	2024-12-31	13F	MKS INSTRS	COM	55306N104	7,445,956	97,392	1.33	777,283	-2.70	0.0135
2024-11-13	2024-09-30	13F	MKS INSTRS	COM	55306N104	7,348,564	380,714	5.46	798,862	-12.20	0.0143
2024-08-13	2024-06-30	13F	MKS INSTRS	COM	55306N104	6,967,850	68,501	0.99	909,862	-0.84	0.0175
2024-05-10	2024-03-31	13F	MKS INSTRS	COM	55306N104	6,899,349	6,408	0.09	917,613	29.41	0.0182
2024-03-11	2023-12-31	13F/A-1	MKS INSTRS	COM	55306N104	6,892,941	39,045	0.57	709,077	19.55	0.0155
2024-02-14	2023-12-31	13F	MKS INSTRS	COM	55306N104	6,892,941	39,045		709,077		0.0135
2023-12-18	2023-09-30	13F/A-1	MKS INSTRS	COM	55306N104	6,853,896	187,884	2.82	593,136	-17.69	0.0146
2023-11-14	2023-09-30	13F	MKS INSTRS	COM	55306N104	6,853,896	187,884		593,136		0.0026
2023-08-14	2023-06-30	13F	MKS INSTRS	COM	55306N104	6,666,012	152,222	2.34	720,596	24.83	0.0171
2023-07-14	2023-03-31	13F/A-1	MKS INSTRS	COM	55306N104	6,513,790	169,392	2.67	577,252	7.38	0.0147
2023-05-15	2023-03-31	13F	MKS INSTRS	COM	55306N104	6,513,790	169,392		577,252		0.0147
2023-02-10	2022-12-31	13F	MKS INSTRS	COM	55306N104	6,344,398	214,555	3.50	537,561	6.12	0.0146
2022-11-14	2022-09-30	13F	MKS INSTRS	COM	55306N104	6,129,843	864,178	16.41	506,570	-6.26	0.0149
2022-08-12	2022-06-30	13F	MKS INSTRS	COM	55306N104	5,265,665	-21,316	-0.40	540,414	-31.86	0.0152
2022-05-13	2022-03-31	13F	MKS INSTRS	COM	55306N104	5,286,981	-356,420	-6.32	793,047	-19.32	0.0188
2022-02-14	2021-12-31	13F	MKS INSTRS	COM	55306N104	5,643,401	-169,191	-2.91	982,911	12.05	0.0223
2021-11-12	2021-09-30	13F	MKS INSTRS	COM	55306N104	5,812,592	139,782	2.46	877,179	-13.11	0.0218
2021-08-13	2021-06-30	13F	MKS INSTRS	COM	55306N104	5,672,810	261,959	4.84	1,009,478	0.62	0.0251
2021-05-14	2021-03-31	13F	MKS INSTRS	COM	55306N104	5,410,851	322,196	6.33	1,003,281	31.05	0.0271
2021-02-12	2020-12-31	13F	MKS INSTRS	COM	55306N104	5,088,655	90,794	1.82	765,589	40.24	0.0222
2020-11-16	2020-09-30	13F	MKS INSTRS	COM	55306N104	4,997,861	-238,229	-4.55	545,917	-7.93	0.0181
2020-08-14	2020-06-30	13F	MKS INSTRS	COM	55306N104	5,236,090	31,346	0.60	592,935	39.87	0.0210
2020-05-15	2020-03-31	13F	MKS INSTRS	COM	55306N104	5,204,744	124,541	2.45	423,926	-24.15	0.0181
2020-02-14	2019-12-31	13F	MKS INSTRUMENT	COM	55306N104	5,080,203	36,200	0.72	558,873	20.07	0.0191
2019-11-14	2019-09-30	13F	MKS INSTRUMENT	COM	55306N104	5,044,003	47,776	0.96	465,461	19.61	0.0173
2019-08-14	2019-06-30	13F	MKS INSTRUMENT	COM	55306N104	4,996,227	7,082	0.14	389,156	-16.17	0.0146
2019-05-15	2019-03-31	13F	MKS INSTRUMENT	COM	55306N104	4,989,145	54,416	1.10	464,239	45.61	0.0182
2019-02-14	2018-12-31	13F	MKS INSTRUMENT	COM	55306N104	4,934,729	-36,267	-0.73	318,832	-19.98	0.0143
2018-12-13	2018-09-30	13F/A-2	MKS INSTRUMENT	COM	55306N104	4,970,996	35,168	0.71	398,425	-15.65	0.0156
2018-11-23	2018-09-30	13F/A-1	MKS INSTRUMENT	COM	55306N104	4,970,996	0		398,425		0.0156
2018-11-14	2018-09-30	13F	MKS INSTRUMENT	COM	55306N104	4,970,996	35,168		398,425
2018-08-14	2018-06-30	13F	MKS INSTRUMENT	COM	55306N104	4,935,828	33,574	0.68	472,358	-16.68	0.0198
2018-05-15	2018-03-31	13F	MKS INSTRUMENT	COM	55306N104	4,902,254	198,709	4.22	566,945	27.55	0.0248
2018-02-14	2017-12-31	13F	MKS INSTRUMENT	COM	55306N104	4,703,545	-296,898	-5.94	444,485	-5.89	0.0194
2017-11-14	2017-09-30	13F	MKS INSTRUMENT	COM	55306N104	5,000,443	127,869	2.62	472,292	44.02	0.0221
2017-08-24	2017-06-30	13F/A-1	MKS INSTRUMENT	COM	55306N104	4,872,574	163,192	3.47	327,924	1.28	0.0162
2017-08-11	2017-06-30	13F	MKS INSTRUMENT	COM	55306N104	4,872,574	163,192		327,924
2017-05-12	2017-03-31	13F	MKS INSTRUMENT	COM	55306N104	4,709,382	223,363	4.98	323,770	21.50	0.0166
2017-02-14	2016-12-31	13F	MKS INSTRUMENT	COM	55306N104	4,486,019	128,280	2.94	266,469	22.96	0.0149
2016-11-14	2016-09-30	13F	MKS INSTRUMENT	COM	55306N104	4,357,739	119,255	2.81	216,710	18.74	0.0127
2016-08-10	2016-06-30	13F	MKS INSTRUMENT	COM	55306N104	4,238,484	144,898	3.54	182,509	18.42	0.0113
2016-05-13	2016-03-31	13F	MKS INSTRUMENT	COM	55306N104	4,093,586	135,563	3.43	154,123	8.16	0.0100
2016-02-08	2015-12-31	13F	MKS INSTRUMENT	COM	55306N104	3,958,023	99,865	2.59	142,489	10.14	0.0096
2015-11-12	2015-09-30	13F/A-1	MKS INSTRUMENT	COM	55306N104	3,858,158	25,021	0.65	129,365	-11.05	0.0055
2015-08-13	2015-06-30	13F	MKS INSTRUMENT	COM	55306N104	3,833,137	139,464	3.78	145,429	16.45	0.0098
2015-05-15	2015-03-31	13F/A-1	MKS INSTRUMENT	COM	55306N104	3,693,673	187,801	5.36	124,884	-2.67	0.0085
2015-05-14	2015-03-31	13F	MKS INSTRUMENT	COM	55306N104	3,693,673			124,884
2015-02-12	2014-12-31	13F	MKS INSTRUMENT	COM	55306N104	3,505,872	63,160	1.83	128,315	11.66	0.0092
2014-11-12	2014-09-30	13F	MKS INSTRUMENT	COM	55306N104	3,442,712	-66,185	-1.89	114,918	4.83	0.0090
2014-08-11	2014-06-30	13F	MKS INSTRUMENT	COM	55306N104	3,508,897	-81,588	-2.27	109,618	2.14	0.0086
2014-05-13	2014-03-31	13F	MKS INSTRUMENT	COM	55306N104	3,590,485	146,068	4.24	107,319	4.07	0.0090
2014-02-12	2013-12-31	13F	MKS INSTRUMENT	COM	55306N104	3,444,417	135,305	4.09	103,126	17.20	0.0091
2013-11-07	2013-09-30	13F	MKS INSTRUMENT	COM	55306N104	3,309,112	97,169	3.03	87,989	3.22	0.0086
2013-08-13	2013-06-30	13F	MKS INSTRUMENT	COM	55306N104	3,211,943	3,211,943		85,245		0.0090

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.