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Earnings per Common Share or Unit | 6 Months Ended
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Jun. 30, 2022
Earnings per Common Share or Unit |
Earnings per Common Share or Unit | 9. Earnings per Common Share or Unit The following is a summary of basic and diluted income per share/unit (in thousands, except per share/unit amounts): ​ Digital Realty Trust, Inc. Earnings per Common Share ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Net income available to common stockholders | ​ | $ | 53,246 | ​ | $ | 127,369 | ​ | $ | 116,346 | ​ | $ | 499,775
Weighted average shares outstanding—basic | ​ |  | 284,694 | ​ |  | 281,792 | ​ |  | 284,610 | ​ |  | 281,445
Potentially dilutive common shares: | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |  | ​
Unvested incentive units | ​ |  | 178 | ​ |  | 177 | ​ |  | 183 | ​ |  | 168
Unvested restricted stock | ​ | ​ | 49 | ​ | ​ | 165 | ​ | ​ | 62 | ​ | ​ | 143
Market performance-based awards | ​ |  | 189 | ​ |  | 300 | ​ |  | 125 | ​ |  | 320
Weighted average shares outstanding—diluted | ​ |  | 285,110 | ​ |  | 282,434 | ​ |  | 284,980 | ​ |  | 282,076
Income per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.19 | ​ | $ | 0.45 | ​ | $ | 0.41 | ​ | $ | 1.78
Diluted | ​ | $ | 0.19 | ​ | $ | 0.45 | ​ | $ | 0.41 | ​ | $ | 1.77
​ ​ ​ Digital Realty Trust, L.P. Earnings per Unit ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Net income available to common unitholders | ​ | $ | 54,746 | ​ | $ | 130,569 | ​ | $ | 119,446 | ​ | $ | 512,775
Weighted average units outstanding—basic | ​ |  | 290,528 | ​ |  | 288,843 | ​ |  | 290,346 | ​ |  | 288,588
Potentially dilutive common units: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Unvested incentive units | ​ |  | 178 | ​ |  | 177 | ​ |  | 183 | ​ |  | 168
Unvested restricted units | ​ | ​ | 49 | ​ | ​ | 165 | ​ | ​ | 62 | ​ | ​ | 143
Market performance-based awards | ​ |  | 189 | ​ |  | 300 | ​ |  | 125 | ​ |  | 320
Weighted average units outstanding—diluted | ​ |  | 290,944 | ​ |  | 289,485 | ​ |  | 290,716 | ​ |  | 289,219
Income per unit: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.19 | ​ | $ | 0.45 | ​ | $ | 0.41 | ​ | $ | 1.78
Diluted | ​ | $ | 0.19 | ​ | $ | 0.45 | ​ | $ | 0.41 | ​ | $ | 1.77
​ The below table shows the securities that would be antidilutive or not dilutive to the calculation of earnings per share and unit. Common units of the Operating Partnership not owned by Digital Realty Trust, Inc. were excluded only from the calculation of earnings per share as they are not applicable to the calculation of earnings per unit. All other securities shown below were excluded from the calculation of both earnings per share and earnings per unit (in thousands). ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended June 30, | ​ | Six Months Ended June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Shares subject to Forward Equity Offering | ​ | 6,250 | ​ | — | ​ | 6,250 | ​ | —
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. |  | 5,834 |  | 7,051 |  | 5,735 |  | 7,143
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock |  | — |  | 689 |  | — |  | 1,082
Potentially dilutive Series J Cumulative Redeemable Preferred Stock |  | 1,536 |  | 1,317 |  | 1,494 |  | 1,390
Potentially dilutive Series K Cumulative Redeemable Preferred Stock | ​ | 1,615 | ​ | 1,385 | ​ | 1,571 | ​ | 1,461
Potentially dilutive Series L Cumulative Redeemable Preferred Stock | ​ | 2,649 | ​ | 2,272 | ​ | 2,577 | ​ | 2,397
Total |  | 17,884 |  | 12,714 |  | 17,627 |  | 13,473
​

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