주식회사 MKS
US ˙ NasdaqGS ˙ US55306N1046

SecurityMKSI / MKS Inc.
InstitutionRoyce Value Trust Inc
Latest Disclosed Ownership158,703 shares
Latest Disclosed Value $ 15,768,730
Royce Value Trust Inc reports 55.93% increase in ownership of MKSI / MKS Inc.

On August 15, 2025 - Royce Value Trust Inc filed a NPORT-P form disclosing ownership of 158,703 shares of MKS Inc. (US:MKSI) valued at $15,768,730 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 19, 2025 disclosing 101,778 shares of MKS Inc.. This represents a change in shares of 55.93% during the quarter. The current value of the position is $47,872,760 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)
2025-08-15 2025-06-30 NP MKS EC US55306N1046 158,703 56,925 55.93 15,769 93.31 0.7872
2025-05-19 2025-03-31 NP MKS Instruments EC US55306N1046 101,778 25,987 34.29 8,158 3.11 0.4433
2025-02-21 2024-12-31 NP MKS Instruments EC US55306N1046 75,791 -6,746 -8.17 7,912 -11.83 0.3959
2024-11-19 2024-09-30 NP MKS Instruments EC US55306N1046 82,537 -14,844 -15.24 8,973 -29.44 0.4441
2024-08-12 2024-06-30 NP MKS Instruments EC US55306N1046 97,381 -68,458 -41.28 12,716 -42.35 0.6665
2024-05-28 2024-03-31 NP MKS Instruments EC US55306N1046 165,839 -34,918 -17.39 22,057 6.80 1.1274
2024-02-20 2023-12-31 NP MKS Instruments EC US55306N1046 200,757 46,328 30.00 20,652 54.53 1.1079
2023-11-22 2023-09-30 NP MKS Instruments EC US55306N1046 154,429 -44,139 -22.23 13,364 -37.74 0.8035
2023-08-09 2023-06-30 NP MKS Instruments EC US55306N1046 198,568 -2,731 -1.36 21,465 20.33 1.2241
2023-05-19 2023-03-31 NP MKS Instruments EC US55306N1046 201,299 400 0.20 17,839 4.80 1.0570
2023-02-21 2022-12-31 NP MKS Instruments EC US55306N1046 200,899 9,990 5.23 17,022 7.90 1.0603
2022-11-17 2022-09-30 NP MKS Instruments EC US55306N1046 190,909 1,500 0.79 15,777 -18.84 1.0689
2022-08-16 2022-06-30 NP MKS Instruments EC US55306N1046 189,409 9,900 5.52 19,439 -27.81 1.2290
2022-05-16 2022-03-31 NP MKS Instruments EC US55306N1046 179,509 -114,540 -38.95 26,926 -47.42 1.4041
2022-02-24 2021-12-31 NP MKS Instruments EC US55306N1046 294,049 9,560 3.36 51,215 19.29 2.3822
2021-11-22 2021-09-30 NP MKS Instruments EC US55306N1046 284,489 9,750 3.55 42,932 -12.18 2.0628
2021-08-24 2021-06-30 NP MKS Instruments EC US55306N1046 274,739 -12,090 -4.22 48,890 -8.07 2.2563
2021-05-17 2021-03-31 NP MKS Instruments EC US55306N1046 286,829 23,050 8.74 53,184 34.01 2.5460
2021-02-19 2020-12-31 NP MKS Instruments EC US55306N1046 263,779 15,550 6.26 39,686 46.36 2.1013
2020-11-24 2020-09-30 NP MKS Instruments EC US55306N1046 248,229 4,900 2.01 27,114 -1.60 1.7947
2020-08-19 2020-06-30 NP MKS Instruments EC US55306N1046 243,329 -11,560 -4.54 27,555 32.73 1.9132
2020-05-27 2020-03-31 NP MKS Instruments EC US55306N1046 254,889 6,550 2.64 20,761 -24.01 1.8548
2020-02-19 2019-12-31 NP MKS Instruments EC 55306N104 248,339 16,000 6.89 27,320 27.42 1.6778
2019-11-25 2019-09-30 NP MKS Instruments EC US55306N1046 232,339 232,339 21,440 1.4312
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.