Renaissance Technologies (RenTech)'s MKSI Position Overview
Renaissance Technologies (RenTech) (via Renaissance Technologies LLC) currently holds 103,603 shares of MKS Inc. (MKSI) worth $23.81 M, representing 0.04% of the portfolio. First purchased in 2013-Q2, this long-term strategic position has been held for 40 quarters.
Based on 13F filings, Renaissance Technologies (RenTech) has maintained a strategic position in MKSI, demonstrating sustained confidence in this investment. Largest addition occurred in Q3 2018, adding 508,470 shares. Largest reduction occurred in Q3 2019, reducing 463,883 shares.
Analysis based on 13F filings available since 2013 Q2
Renaissance Technologies (RenTech)'s MKS (MKSI) Holding Value Over Time
Track share changes against reported price movement
Quarterly MKS (MKSI) Trades by Renaissance Technologies (RenTech)
| Report Date | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q1 2026 | +103,603 | New Buy | 103,603 | $229.81 |
| Q2 2025 | -37,803 | Sold Out | 0 | $0.00 |
| Q1 2025 | -87,600 | Reduce 69.85% | 37,803 | $80.15 |
| Q4 2024 | +125,403 | New Buy | 125,403 | $104.39 |
| Q4 2023 | -140,703 | Sold Out | 0 | $0.00 |
| Q3 2023 | +140,703 | New Buy | 140,703 | $86.54 |
| Q2 2023 | -229,203 | Sold Out | 0 | $0.00 |
| Q1 2023 | -109,300 | Reduce 32.29% | 229,203 | $0.09 |
| Q4 2022 | +3,525 | Add 1.05% | 338,503 | $0.08 |
| Q3 2022 | +125,326 | Add 59.78% | 334,978 | $82.64 |
| Q2 2022 | +133,800 | Add 176.40% | 209,652 | $102.63 |
| Q1 2022 | -67,300 | Reduce 47.01% | 75,852 | $150.00 |
| Q4 2021 | -25,800 | Reduce 15.27% | 143,152 | $174.17 |
| Q3 2021 | +168,952 | New Buy | 168,952 | $150.91 |
| Q1 2021 | -64,452 | Sold Out | 0 | $0.00 |
| Q4 2020 | -117,200 | Reduce 64.52% | 64,452 | $150.45 |
| Q3 2020 | +181,652 | New Buy | 181,652 | $109.23 |
| Q2 2020 | -257,020 | Sold Out | 0 | $0.00 |
| Q1 2020 | -438,263 | Reduce 63.03% | 257,020 | $81.45 |
| Q4 2019 | -438,586 | Reduce 38.68% | 695,283 | $110.01 |
| Q3 2019 | -463,883 | Reduce 29.03% | 1.13 M | $92.28 |
| Q2 2019 | -234,748 | Reduce 12.81% | 1.6 M | $77.89 |
| Q1 2019 | -298,452 | Reduce 14.01% | 1.83 M | $93.05 |
| Q4 2018 | +228,580 | Add 12.02% | 2.13 M | $64.61 |
| Q3 2018 | +508,470 | Add 36.48% | 1.9 M | $80.15 |
| Q2 2018 | +385,102 | Add 38.17% | 1.39 M | $95.70 |
| Q1 2018 | +323,500 | Add 47.21% | 1.01 M | $115.65 |
| Q4 2017 | +92,048 | Add 15.52% | 685,300 | $94.50 |
| Q3 2017 | +120,400 | Add 25.46% | 593,252 | $94.45 |
| Q2 2017 | +472,852 | New Buy | 472,852 | $67.30 |
| Q2 2016 | -73,352 | Sold Out | 0 | $0.00 |
| Q1 2016 | +73,352 | New Buy | 73,352 | $37.65 |
| Q4 2015 | -29,458 | Sold Out | 0 | $0.00 |
| Q3 2015 | +1,406 | Add 5.01% | 29,458 | $33.54 |
| Q2 2015 | +28,052 | New Buy | 28,052 | $37.93 |
| Q3 2014 | -146,852 | Sold Out | 0 | $0.00 |
| Q2 2014 | +112,000 | Add 321.36% | 146,852 | $31.24 |
| Q1 2014 | +34,852 | New Buy | 34,852 | $29.90 |
| Q3 2013 | -117,771 | Sold Out | 0 | $0.00 |
| Q2 2013 | +117,771 | Add 0.00% | 117,771 | $26.54 |
Renaissance Technologies (RenTech)'s MKS Investment FAQs
Renaissance Technologies (RenTech) first purchased MKS Inc. (MKSI) in Q2 2013, acquiring 117,771 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Renaissance Technologies (RenTech) has held MKS Inc. (MKSI) for 40 quarters since Q2 2013.
Renaissance Technologies (RenTech)'s largest addition to MKS Inc. (MKSI) was in Q3 2018, adding 1,902,372 shares worth $152.48 M.
According to the latest 13F filing for Q1 2026, Renaissance Technologies (RenTech)'s firm, Renaissance Technologies LLC, owns 103,603 shares of MKS Inc. (MKSI), valued at approximately $23.81 M.
As of the Q1 2026 filing, MKS Inc. (MKSI) represents approximately 0.04% of Renaissance Technologies (RenTech)'s publicly disclosed stock portfolio, making it one of their key holdings.
Renaissance Technologies (RenTech)'s peak holding in MKS Inc. (MKSI) was 2,130,952 shares, as reported at the end of Q4 2018.