Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 30,048 | $3,208 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 19,601 | $2,198 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 20,950 | $2,052 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 20,376 | $1,791 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 20,411 | $2,009 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 19,768 | $1,485 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 16,359 | $1,229 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 14,851 | $1,245 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 14,402 | $1,156 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 14,049 | $1,018 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 13,667 | $1,000 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 13,532 | $976 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 12,496 | $855 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 13,359 | $869 | $69.19 | $63.06 - $78.78 |
| Q4 2020 | 5,309 | $469 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 4,978 | $407 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 15,554 | $1,359 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 9,389 | $665 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 11,251 | $994 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 11,486 | $1,023 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 9,153 | $854 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 9,189 | $997 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 9,087 | $1,062 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 7,672 | $995 | $126.95 | $115.25 - $140.32 |
| Q2 2017 | 3,985 | $440 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 4,104 | $419 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 5,572 | $593 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 2,722 | $239 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 14,681 | $1,385 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 22,280 | $1,866 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 26,531 | $2,198 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 42,265 | $3,561 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 57,287 | $4,601 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 59,069 | $3,744 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 46,390 | $2,692 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 41,110 | $2,496 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 36,942 | $2,691 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 40,593 | $3,168 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 36,637 | $2,949 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 27,410 | $1,930 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 12,707 | $915 | $76.01 | $70.25 - $80.50 |