Ticker: NPK CUSIP: 637215104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2025 | 4,799 | $470 | $87.38 | $77.63 - $100.17 |
| Q1 2025 | 4,882 | $429 | $95.29 | $85.21 - $103.93 |
| Q4 2024 | 5,781 | $569 | $80.38 | $69.80 - $99.07 |
| Q3 2024 | 8,353 | $628 | $74.60 | $69.58 - $79.26 |
| Q2 2024 | 11,486 | $863 | $78.76 | $72.07 - $86.08 |
| Q1 2024 | 11,852 | $993 | $79.07 | $73.97 - $84.29 |
| Q4 2023 | 11,187 | $898 | $76.85 | $70.86 - $83.00 |
| Q3 2023 | 7,810 | $566 | $75.50 | $70.24 - $81.40 |
| Q1 2023 | 5,652 | $407 | $72.97 | $67.77 - $81.50 |
| Q4 2022 | 7,725 | $529 | $68.37 | $63.90 - $71.73 |
| Q3 2022 | 10,762 | $700 | $69.19 | $63.06 - $78.78 |
| Q2 2022 | 5,680 | $373 | $70.97 | $59.99 - $79.31 |
| Q1 2022 | 5,680 | $437 | $81.17 | $76.40 - $89.05 |
| Q4 2021 | 197,900 | $16,234 | $83.82 | $78.33 - $89.50 |
| Q3 2021 | 425,936 | $34,961 | $89.68 | $79.78 - $103.69 |
| Q2 2021 | 463,193 | $47,084 | $103.08 | $97.03 - $107.89 |
| Q1 2021 | 455,152 | $46,457 | $98.38 | $86.66 - $117.87 |
| Q4 2020 | 452,635 | $40,027 | $85.92 | $79.49 - $94.30 |
| Q3 2020 | 431,060 | $35,287 | $87.32 | $81.09 - $95.66 |
| Q2 2020 | 402,460 | $35,171 | $85.05 | $68.17 - $97.90 |
| Q1 2020 | 444,193 | $31,453 | $84.26 | $66.60 - $93.99 |
| Q4 2019 | 508,168 | $44,917 | $87.02 | $80.39 - $92.37 |
| Q3 2019 | 503,475 | $44,855 | $90.44 | $82.38 - $97.82 |
| Q2 2019 | 507,214 | $47,318 | $101.82 | $89.24 - $112.50 |
| Q1 2019 | 589,956 | $64,040 | $116.40 | $99.24 - $133.12 |
| Q4 2018 | 576,626 | $67,419 | $125.24 | $109.50 - $133.95 |
| Q3 2018 | 577,650 | $74,892 | $126.95 | $115.25 - $140.32 |
| Q2 2018 | 573,900 | $71,164 | $107.98 | $92.00 - $136.65 |
| Q1 2018 | 661,700 | $62,034 | $99.25 | $88.80 - $108.45 |
| Q4 2017 | 644,700 | $64,115 | $109.11 | $95.50 - $121.40 |
| Q3 2017 | 651,112 | $69,311 | $105.66 | $95.65 - $114.70 |
| Q2 2017 | 647,200 | $71,516 | $105.57 | $98.05 - $112.45 |
| Q1 2017 | 646,000 | $66,021 | $103.21 | $91.75 - $112.00 |
| Q4 2016 | 646,800 | $68,820 | $93.06 | $83.53 - $108.75 |
| Q3 2016 | 620,130 | $54,441 | $90.73 | $85.13 - $96.25 |
| Q2 2016 | 608,500 | $57,412 | $87.97 | $81.96 - $94.35 |
| Q1 2016 | 590,000 | $49,407 | $80.09 | $72.30 - $88.00 |
| Q4 2015 | 585,100 | $48,481 | $86.71 | $78.13 - $94.18 |
| Q3 2015 | 676,845 | $57,031 | $81.19 | $74.57 - $88.00 |
| Q2 2015 | 890,789 | $71,548 | $68.50 | $61.65 - $80.34 |
| Q1 2015 | 892,926 | $56,603 | $61.65 | $56.04 - $67.90 |
| Q4 2014 | 893,826 | $51,878 | $59.42 | $54.07 - $63.69 |
| Q3 2014 | 896,580 | $54,431 | $66.40 | $60.68 - $75.50 |
| Q2 2014 | 897,380 | $65,365 | $71.81 | $67.09 - $77.75 |
| Q1 2014 | 891,370 | $69,563 | $78.13 | $73.04 - $84.00 |
| Q4 2013 | 889,982 | $71,644 | $73.58 | $67.32 - $81.00 |
| Q3 2013 | 889,151 | $62,605 | $72.80 | $68.50 - $77.50 |
| Q2 2013 | 879,126 | $63,323 | $76.01 | $70.25 - $80.50 |