Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 78,808 | $8,414 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 66,372 | $7,444 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 64,086 | $6,278 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 69,133 | $6,077 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 68,217 | $6,714 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 69,629 | $5,232 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 69,026 | $5,186 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 65,028 | $5,449 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 68,809 | $5,524 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 75,183 | $5,448 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 76,842 | $5,625 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 96,659 | $6,968 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 127,652 | $8,739 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 114,578 | $7,454 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 114,105 | $7,491 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 25,163 | $1,936 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 19,729 | $1,619 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 107,751 | $8,844 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 105,427 | $10,716 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 154,036 | $15,723 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 170,541 | $15,081 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 170,030 | $13,918 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 144,361 | $12,615 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 16,459 | $1,166 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 11,627 | $1,028 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 19,248 | $1,715 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 28,070 | $2,619 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 39,718 | $4,311 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 46,500 | $5,438 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 16,848 | $2,184 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 14,824 | $1,838 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 14,055 | $1,317 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 94,379 | $9,386 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 85,963 | $9,151 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 86,178 | $9,522 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 87,606 | $8,953 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 80,813 | $8,598 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 64,411 | $5,654 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 11,469 | $1,082 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 20,653 | $1,729 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 29,632 | $2,456 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 26,859 | $2,263 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 15,964 | $1,282 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 16,679 | $1,057 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 22,349 | $1,297 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 22,439 | $1,362 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 22,684 | $1,653 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 21,297 | $1,662 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 16,976 | $1,367 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 13,380 | $942 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 11,313 | $815 | $76.01 | $70.25 - $80.50 |