Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2021 | 2,794 | $284 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 2,794 | $285 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 3,123 | $276 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 2,868 | $235 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 3,472 | $303 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 4,709 | $333 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 4,990 | $441 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 7,317 | $652 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 33,574 | $3,132 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 36,664 | $3,980 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 42,187 | $4,933 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 44,040 | $5,710 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 52,903 | $6,560 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 52,270 | $4,900 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 59,400 | $5,907 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 57,355 | $6,128 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 58,735 | $6,534 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 59,404 | $6,071 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 57,840 | $6,154 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 57,563 | $5,083 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 53,282 | $5,027 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 50,341 | $4,216 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 48,007 | $3,908 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 45,117 | $3,802 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 37,445 | $3,008 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 38,425 | $2,436 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 36,118 | $2,096 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 53,676 | $3,259 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 77,099 | $5,616 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 84,205 | $6,571 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 85,903 | $6,915 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 88,395 | $6,224 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 66,532 | $4,792 | $76.01 | $70.25 - $80.50 |