Chuck Royce's MKSI Position Overview
Chuck Royce (via Royce & Associates Lp) currently holds 616,605 shares of MKS Inc. (MKSI) worth $98.53 M, representing 1.00% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 51 quarters.
Based on 13F filings since 2013, Chuck Royce has maintained a long-term strategic position in MKSI, representing a significant commitment to this investment thesis. Largest addition occurred in Q3 2013, adding 879,112 shares. Largest reduction occurred in Q4 2015, reducing 1.51 M shares.
Analysis based on 13F filings available since 2013 Q2
Chuck Royce's MKS (MKSI) Holding Value Over Time
Track share changes against reported price movement
Quarterly MKS (MKSI) Trades by Chuck Royce
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q4 2025 | -210,522 | Reduce 25.45% | 616,605 | $159.80 |
| Q3 2025 | -87,984 | Reduce 9.61% | 827,127 | $123.77 |
| Q2 2025 | +121,867 | Add 15.36% | 915,111 | $99.36 |
| Q1 2025 | +53,800 | Add 7.28% | 793,244 | $80.15 |
| Q4 2024 | -23,950 | Reduce 3.14% | 739,444 | $104.39 |
| Q3 2024 | -37,017 | Reduce 4.62% | 763,394 | $108.71 |
| Q2 2024 | -119,081 | Reduce 12.95% | 800,411 | $130.58 |
| Q1 2024 | -200,201 | Reduce 17.88% | 919,492 | $133.00 |
| Q4 2023 | +159,704 | Add 16.64% | 1.12 M | $102.87 |
| Q3 2023 | -49,077 | Reduce 4.86% | 959,989 | $86.54 |
| Q2 2023 | +122,848 | Add 13.86% | 1.01 M | $108.10 |
| Q1 2023 | +38,403 | Add 4.53% | 886,218 | $88.62 |
| Q4 2022 | +45,462 | Add 5.67% | 847,815 | $84.73 |
| Q3 2022 | +11,622 | Add 1.47% | 802,353 | $82.64 |
| Q2 2022 | +103,395 | Add 15.04% | 790,731 | $102.63 |
| Q1 2022 | -155,946 | Reduce 18.49% | 687,336 | $150.00 |
| Q4 2021 | -32,850 | Reduce 3.75% | 843,282 | $174.17 |
| Q3 2021 | +96,739 | Add 12.41% | 876,132 | $150.91 |
| Q2 2021 | -110,673 | Reduce 12.43% | 779,393 | $177.95 |
| Q1 2021 | -71,519 | Reduce 7.44% | 890,066 | $185.42 |
| Q4 2020 | -26,550 | Reduce 2.69% | 961,585 | $150.45 |
| Q3 2020 | -11,383 | Reduce 1.14% | 988,135 | $109.23 |
| Q2 2020 | -28,493 | Reduce 2.77% | 999,518 | $113.24 |
| Q1 2020 | +6,993 | Add 0.68% | 1.03 M | $81.45 |
| Q4 2019 | -138,243 | Reduce 11.93% | 1.02 M | $110.01 |
| Q3 2019 | -86,421 | Reduce 6.94% | 1.16 M | $92.28 |
| Q2 2019 | -46,041 | Reduce 3.56% | 1.25 M | $77.89 |
| Q1 2019 | -111,042 | Reduce 7.92% | 1.29 M | $93.05 |
| Q4 2018 | +338,387 | Add 31.79% | 1.4 M | $64.61 |
| Q3 2018 | +63,481 | Add 6.34% | 1.06 M | $80.15 |
| Q2 2018 | +50,368 | Add 5.30% | 1 M | $95.70 |
| Q1 2018 | -323,295 | Reduce 25.38% | 950,529 | $115.65 |
| Q4 2017 | -392,071 | Reduce 23.54% | 1.27 M | $94.50 |
| Q3 2017 | -120,486 | Reduce 6.74% | 1.67 M | $94.45 |
| Q2 2017 | -90,600 | Reduce 4.83% | 1.79 M | $67.30 |
| Q1 2017 | -451,632 | Reduce 19.39% | 1.88 M | $68.75 |
| Q4 2016 | -338,497 | Reduce 12.69% | 2.33 M | $59.40 |
| Q3 2016 | -787,131 | Reduce 22.79% | 2.67 M | $49.73 |
| Q2 2016 | -666,546 | Reduce 16.18% | 3.45 M | $43.06 |
| Q1 2016 | -742,207 | Reduce 15.26% | 4.12 M | $37.65 |
| Q4 2015 | -1.51 M | Reduce 23.68% | 4.86 M | $36.00 |
| Q3 2015 | -438,940 | Reduce 6.44% | 6.37 M | $33.53 |
| Q2 2015 | +78,518 | Add 1.17% | 6.81 M | $37.94 |
| Q1 2015 | -6,845 | Reduce 0.10% | 6.73 M | $33.81 |
| Q4 2014 | -1.48 M | Reduce 18.00% | 6.74 M | $36.60 |
| Q3 2014 | -79,800 | Reduce 0.96% | 8.22 M | $33.38 |
| Q2 2014 | +278,924 | Add 3.48% | 8.3 M | $31.24 |
| Q1 2014 | +34,800 | Add 0.44% | 8.02 M | $29.89 |
| Q4 2013 | +487,471 | Add 6.50% | 7.98 M | $29.94 |
| Q3 2013 | +879,112 | Add 13.28% | 7.5 M | $26.59 |
| Q2 2013 | +6.62 M | Add 0.00% | 6.62 M | $26.54 |
Chuck Royce's MKS Investment FAQs
Chuck Royce first purchased MKS Inc. (MKSI) in Q2 2013, acquiring 6,617,617 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Chuck Royce has held MKS Inc. (MKSI) for 51 quarters since Q2 2013.
Chuck Royce's largest addition to MKS Inc. (MKSI) was in Q2 2013, adding 6,617,617 shares worth $175.63 M.
According to the latest 13F filing for Q4 2025, Chuck Royce's firm, Royce & Associates Lp, owns 616,605 shares of MKS Inc. (MKSI), valued at approximately $98.53 M.
As of the Q4 2025 filing, MKS Inc. (MKSI) represents approximately 1.00% of Chuck Royce's publicly disclosed stock portfolio, making it one of their key holdings.
Chuck Royce's peak holding in MKS Inc. (MKSI) was 8,297,924 shares, as reported at the end of Q2 2014.