| Earnings Per Share, Basic and Diluted |
The computation of earnings per share is as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended September 30, | | Nine Months Ended September 30, | | | 2020 | | 2019 | | 2020 | | 2019 | | | | | (dollars and share data in thousands, except per share data) | | Net income (loss) | $ | 29,516 | | | $ | 6,583 | | | $ | 104,353 | | | 26,596 | | | | | Net income (loss) attributable to non-controlling interests in consolidated subsidiaries and investment funds | 9,232 | | | 2,770 | | | (19,843) | | | 7,188 | | | | | Net income (loss) attributable to Cowen Inc. | 20,284 | | | 3,813 | | | 124,196 | | | 19,408 | | | | | Preferred stock dividends | 1,698 | | | 1,698 | | | 5,094 | | | 5,094 | | | | | Net income (loss) attributable to Cowen Inc. common stockholders | $ | 18,586 | | | $ | 2,115 | | | $ | 119,102 | | | $ | 14,314 | | | | | | | | | | | | | | | Shares for basic and diluted calculations: | | | | | | | | | | | Weighted average shares used in basic computation | 27,663 | | | 29,529 | | | 28,078 | | | 29,687 | | | | | | | | | | | | | | | | | | | | | | | | | Contingently issuable common stock in connection with an acquisition (see Note 3) | 22 | | | — | | | 22 | | | — | | | | | Restricted stock | 2,285 | | | 1,735 | | | 1,546 | | | 1,694 | | | | | Weighted average shares used in diluted computation | 29,970 | | | 31,264 | | | 29,646 | | | 31,381 | | | | | Earnings (loss) per share: | | | | | | | | | | | Basic | $ | 0.67 | | | $ | 0.07 | | | $ | 4.24 | | | $ | 0.48 | | | | | Diluted | $ | 0.62 | | | $ | 0.07 | | | $ | 4.02 | | | $ | 0.46 | | | |
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