MKS INSTRS INC

Ticker: MKSI CUSIP: 55306N104 Class: EQTY

PRICE T ROWE ASSOCIATES INC /MD/'s Holding History (CIK: 0000080255)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 2,753,850 Value ($000) $440 Avg Close $148.21 Range $120.73 - $170.37
Q3 2025
Shares 3,633,019 Value ($000) $450 Avg Close $106.31 Range $88.17 - $132.24
Q2 2025
Shares 4,129,128 Value ($000) $410 Avg Close $80.86 Range $54.50 - $100.44
Q1 2025
Shares 3,515,373 Value ($000) $282 Avg Close $100.21 Range $75.89 - $124.28
Q4 2024
Shares 3,341,428 Value ($000) $349 Avg Close $106.91 Range $96.54 - $118.37
Q3 2024
Shares 4,278,634 Value ($000) $465 Avg Close $117.45 Range $99.10 - $145.63
Q2 2024
Shares 6,845,561 Value ($000) $894 Avg Close $124.55 Range $105.72 - $137.52
Q1 2024
Shares 7,562,947 Value ($000) $1,006 Avg Close $114.51 Range $94.23 - $132.85
Q4 2023
Shares 8,084,331 Value ($000) $832 Avg Close $79.84 Range $62.28 - $104.49
Q3 2023
Shares 4,759,567 Value ($000) $412 Avg Close $95.58 Range $81.25 - $107.67
Q2 2023
Shares 3,586,959 Value ($000) $388 Avg Close $89.53 Range $77.81 - $108.20
Q1 2023
Shares 1,881,747 Value ($000) $167 Avg Close $93.12 Range $80.00 - $111.27
Q4 2022
Shares 1,498,030 Value ($000) $127 Avg Close $78.00 Range $62.97 - $89.22
Q3 2022
Shares 439,785 Value ($000) $36,345 Avg Close $100.01 Range $79.23 - $120.27
Q2 2022
Shares 438,951 Value ($000) $45,050 Avg Close $112.92 Range $94.75 - $148.07
Q1 2022
Shares 436,756 Value ($000) $65,513 Avg Close $150.35 Range $131.30 - $175.09
Q4 2021
Shares 431,282 Value ($000) $75,116 Avg Close $151.09 Range $136.06 - $172.80
Q3 2021
Shares 430,438 Value ($000) $64,957 Avg Close $148.13 Range $133.76 - $168.78
Q2 2021
Shares 470,056 Value ($000) $83,646 Avg Close $175.09 Range $158.98 - $192.11
Q1 2021
Shares 549,530 Value ($000) $101,894 Avg Close $161.78 Range $138.78 - $185.00
Q4 2020
Shares 1,055,478 Value ($000) $158,797 Avg Close $125.75 Range $101.82 - $152.08
Q3 2020
Shares 981,237 Value ($000) $107,181 Avg Close $112.47 Range $97.77 - $124.64
Q2 2020
Shares 1,015,386 Value ($000) $114,982 Avg Close $95.31 Range $70.45 - $112.06
Q1 2020
Shares 996,397 Value ($000) $81,157 Avg Close $97.84 Range $64.00 - $116.86
Q4 2019
Shares 1,066,712 Value ($000) $117,349 Avg Close $99.99 Range $81.07 - $109.78
Q3 2019
Shares 1,069,236 Value ($000) $98,669 Avg Close $78.64 Range $68.69 - $91.29
Q2 2019
Shares 1,204,128 Value ($000) $93,790 Avg Close $80.27 Range $67.03 - $98.53
Q1 2019
Shares 1,240,904 Value ($000) $115,466 Avg Close $76.40 Range $59.36 - $88.91
Q4 2018
Shares 1,328,828 Value ($000) $85,856 Avg Close $68.31 Range $53.35 - $77.61
Q3 2018
Shares 1,155,660 Value ($000) $92,626 Avg Close $86.11 Range $74.38 - $97.19
Q2 2018
Shares 953,331 Value ($000) $91,234 Avg Close $102.60 Range $86.55 - $115.42
Q1 2018
Shares 931,950 Value ($000) $107,780 Avg Close $103.13 Range $88.32 - $120.60
Q4 2017
Shares 611,192 Value ($000) $57,758 Avg Close $93.43 Range $82.69 - $103.63
Q3 2017
Shares 386,882 Value ($000) $36,541 Avg Close $76.52 Range $62.45 - $89.48
Q2 2017
Shares 366,073 Value ($000) $24,637 Avg Close $70.74 Range $60.40 - $82.65
Q1 2017
Shares 16,962 Value ($000) $1,166 Avg Close $61.31 Range $54.85 - $65.67
Q4 2016
Shares 16,962 Value ($000) $1,008 Avg Close $50.13 Range $43.15 - $57.04
Q3 2016
Shares 16,953 Value ($000) $843 Avg Close $43.66 Range $38.22 - $50.60
Q2 2016
Shares 16,953 Value ($000) $730 Avg Close $35.80 Range $32.24 - $39.81
Q1 2016
Shares 16,953 Value ($000) $638 Avg Close $31.35 Range $28.08 - $35.11
Q4 2015
Shares 16,953 Value ($000) $610 Avg Close $32.52 Range $26.43 - $35.02
Q3 2015
Shares 14,713 Value ($000) $493 Avg Close $31.60 Range $28.82 - $34.92
Q2 2015
Shares 14,713 Value ($000) $558 Avg Close $32.93 Range $29.54 - $35.95
Q1 2015
Shares 14,713 Value ($000) $497 Avg Close $31.63 Range $29.59 - $33.22
Q4 2014
Shares 14,713 Value ($000) $538 Avg Close $31.69 Range $27.30 - $33.99
Q3 2014
Shares 14,713 Value ($000) $491 Avg Close $29.19 Range $27.47 - $31.20
Q2 2014
Shares 14,713 Value ($000) $460 Avg Close $25.69 Range $23.72 - $27.88
Q1 2014
Shares 14,713 Value ($000) $440 Avg Close $26.46 Range $25.10 - $28.61
Q4 2013
Shares 14,713 Value ($000) $441 Avg Close $25.51 Range $23.10 - $27.14
Q3 2013
Shares 14,713 Value ($000) $391 Avg Close $23.28 Range $21.63 - $25.20
Q2 2013
Shares 14,713 Value ($000) $390 Avg Close $23.45 Range $21.31 - $25.25