Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 986 | $105 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 986 | $111 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 1,186 | $116 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 1,588 | $140 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 1,616 | $159 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 1,448 | $109 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 1,395 | $105 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 1,386 | $116 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 1,480 | $119 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 1,480 | $107 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 1,501 | $110 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 1,646 | $119 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 1,536 | $105 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 2,462 | $160 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 1,436 | $94 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 822 | $63 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 841 | $69 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 853 | $70 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 952 | $97 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 954 | $97 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 954 | $84 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 1,062 | $87 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 1,217 | $106 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 1,699 | $121 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 2,235 | $197 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 6,270 | $559 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 6,938 | $647 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 7,132 | $774 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 7,230 | $846 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 7,253 | $942 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 7,524 | $933 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 8,763 | $821 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 8,891 | $885 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 8,873 | $944 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 9,198 | $1,017 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 9,373 | $959 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 9,496 | $1,011 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 9,236 | $811 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 9,671 | $911 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 10,365 | $868 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 10,946 | $906 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 11,702 | $986 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 12,550 | $1,007 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 13,463 | $854 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 13,158 | $764 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 13,165 | $799 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 12,716 | $926 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 13,311 | $1,040 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 11,111 | $894 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 11,003 | $774 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 10,901 | $786 | $76.01 | $70.25 - $80.50 |