Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2025 | 860 | $92 | $104.80 | $91.28 - $120.49 |
| Q3 2025 | 1,312 | $148 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 6,610 | $647 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 6,400 | $563 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 5,986 | $589 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 6,267 | $471 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 8,672 | $652 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 4,482 | $376 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 5,829 | $468 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 5,167 | $375 | $75.50 | $70.24 - $81.40 |
| Q2 2023 | 5,018 | $367 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 4,172 | $301 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 4,382 | $300 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 3,863 | $251 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 3,529 | $232 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 3,858 | $296 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 4,246 | $348 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 4,047 | $332 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 3,926 | $400 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 3,607 | $368 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 5,866 | $519 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 5,855 | $479 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 5,802 | $507 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 5,807 | $411 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 4,025 | $356 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 3,935 | $350 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 4,144 | $387 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 4,010 | $435 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 4,117 | $481 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 4,635 | $601 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 4,370 | $542 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 4,390 | $412 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 4,298 | $427 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 4,704 | $501 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 9,666 | $1,068 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 8,543 | $873 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 9,955 | $1,059 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 10,582 | $929 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 10,442 | $984 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 10,974 | $918 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 5,366 | $445 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 5,434 | $458 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 5,331 | $429 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 5,437 | $345 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 6,244 | $362 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 3,828 | $232 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 4,176 | $304 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 3,303 | $257 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 3,303 | $265 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 3,849 | $271 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 6,877 | $495 | $76.01 | $70.25 - $80.50 |