Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2020 | 1,938 | $171 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 1,949 | $160 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 1,897 | $166 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 1,755 | $124 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 1,755 | $155 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 1,710 | $152 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 1,681 | $157 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 1,614 | $175 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 1,561 | $183 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 1,489 | $193 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 1,451 | $180 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 1,391 | $130 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 1,304 | $130 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 1,270 | $135 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 1,219 | $135 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 1,154 | $118 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 1,078 | $115 | $93.06 | $83.53 - $108.75 |
| Q2 2016 | 950 | $90 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 863 | $72 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 782 | $65 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 715 | $60 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 680 | $55 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 652 | $41 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 632 | $37 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 612 | $37 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 617 | $45 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 598 | $47 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 779 | $63 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 720 | $51 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 678 | $49 | $76.01 | $70.25 - $80.50 |