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Net income (loss) per share | 9 Months Ended
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Sep. 30, 2020
Net income (loss) per share |
Net income (loss) per share | 15. Net income (loss) per share Net income (loss) per share was calculated as follows for the periods indicated below:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Three Months Ended | ​ | Nine Months Ended
​ |  | September 30, |  | September 30,
(in thousands, except per share data) |  |  | 2020 |  | 2019 |  |  | 2020 |  | 2019
Basic Net Income (Loss) Per Share | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) per share | ​ | $ | (15,203) | ​ | $ | 128,271 | ​ | $ | (445,547) | ​ | $ | 335,901
Weighted average common shares outstanding | ​ | ​ | 218,784 | ​ | ​ | 215,199 | ​ | ​ | 217,684 | ​ | ​ | 214,628
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic net income (loss) per share | ​ | $ | (0.07) | ​ | $ | 0.60 | ​ | $ | (2.05) | ​ | $ | 1.57
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted Net Income (Loss) Per Share | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) | ​ | $ | (15,203) | ​ | $ | 128,271 | ​ | $ | (445,547) | ​ | $ | 335,901
Weighted average common shares outstanding | ​ | ​ | 218,784 | ​ | ​ | 215,199 | ​ | ​ | 217,684 | ​ | ​ | 214,628
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Dilutive stock options and awards | ​ | ​ | — | ​ | ​ | 2,592 | ​ | ​ | — | ​ | ​ | 2,765
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares used to compute diluted net income (loss) per share | ​ | ​ | 218,784 | ​ | ​ | 217,791 | ​ | ​ | 217,684 | ​ | ​ | 217,393
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Diluted net income (loss) per share | ​ | $ | (0.07) | ​ | $ | 0.59 | ​ | $ | (2.05) | ​ | $ | 1.55
​ The potential common shares that were excluded from the diluted net income (loss) per share computation are as follows:
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Nine Months Ended | ​
​ | ​ | September 30, | ​ | September 30, | ​
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019 |
Outstanding stock options and awards |  | 15,447,389 | ​ | 8,893,596 | ​ | 15,447,389 | ​ | 9,457,441 |
Common shares issuable upon conversion of the 2020 Notes |  | 231,339 | ​ | 368,939 | ​ | 231,339 | ​ | 368,939 |
Total potential common shares excluded from diluted net income (loss) per share computation |  | 15,678,728 |  | 9,262,535 |  | 15,678,728 |  | 9,826,380 |
​

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