Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q3 2025 | 2,517 | $282 | $106.18 | $94.71 - $117.46 |
| Q2 2025 | 2,717 | $266 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 10,717 | $942 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 6,117 | $602 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 4,417 | $332 | $74.60 | $69.58 - $79.26 |
| Q2 2023 | 6,217 | $455 | $73.54 | $66.83 - $82.59 |
| Q1 2023 | 7,217 | $520 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 12,117 | $830 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 17,317 | $1,126 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 22,117 | $1,452 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 18,617 | $1,433 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 10,017 | $822 | $83.82 | $78.33 - $89.50 |
| Q4 2019 | 2,317 | $205 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 2,317 | $206 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 9,654 | $901 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 11,054 | $1,200 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 17,654 | $2,064 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 21,854 | $2,833 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 25,554 | $3,169 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 10,054 | $943 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 15,254 | $1,517 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 17,479 | $1,861 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 19,054 | $2,105 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 12,554 | $1,283 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 6,354 | $676 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 4,464 | $392 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 2,464 | $232 | $87.97 | $81.96 - $94.35 |
| Q3 2015 | 9,964 | $840 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 9,664 | $776 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 7,564 | $479 | $61.65 | $56.04 - $67.90 |