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Earnings per Common Share or Unit | 9 Months Ended
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Sep. 30, 2022
Earnings per Common Share or Unit |
Earnings per Common Share or Unit | 10. 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 September 30, | ​ | Nine Months Ended September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common stockholders | ​ | $ | 226,894 | ​ | $ | 124,094 | ​ | $ | 343,240 | ​ | $ | 623,869
Plus: Loss attributable to redeemable noncontrolling interest | ​ | ​ | (3,548) | ​ | ​ | — | ​ | ​ | (3,548) | ​ | ​ | —
Net income available to common stockholders - diluted EPS | ​ | ​ | 223,346 | ​ | ​ | 124,094 | ​ | ​ | 339,692 | ​ | ​ | 623,869
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average shares outstanding—basic | ​ |  | 286,693 | ​ |  | 283,106 | ​ |  | 285,312 | ​ |  | 282,005
Potentially dilutive common shares: | ​ |  |  | ​ |  | ​ | ​ |  |  | ​ |  | ​
Unvested incentive units | ​ |  | 195 | ​ |  | 217 | ​ |  | 213 | ​ |  | 208
Unvested restricted stock | ​ | ​ | 13 | ​ | ​ | 188 | ​ | ​ | 53 | ​ | ​ | 165
Forward equity offering | ​ | ​ | — | ​ | ​ | 44 | ​ | ​ | — | ​ | ​ | —
Market performance-based awards | ​ |  | 86 | ​ |  | 245 | ​ |  | 112 | ​ |  | 295
Redeemable noncontrolling interest shares (1) | ​ | ​ | 9,428 | ​ | ​ | — | ​ | ​ | 8,568 | ​ | ​ | —
Weighted average shares outstanding—diluted | ​ |  | 296,415 | ​ |  | 283,800 | ​ |  | 294,257 | ​ |  | 282,673
Income per share: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.79 | ​ | $ | 0.44 | ​ | $ | 1.20 | ​ | $ | 2.21
Diluted | ​ | $ | 0.75 | ​ | $ | 0.44 | ​ | $ | 1.15 | ​ | $ | 2.21
​ Digital Realty Trust, L.P. Earnings per Unit ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Numerator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common unitholders | ​ | $ | 232,294 | ​ | $ | 127,094 | ​ | $ | 351,740 | ​ | $ | 639,869
Plus: Loss attributable to redeemable noncontrolling interest | ​ | ​ | (3,548) | ​ | ​ | — | ​ | ​ | (3,548) | ​ | ​ | —
Net income available to common unitholders - diluted EPS | ​ | ​ | 228,746 | ​ | ​ | 127,094 | ​ | ​ | 348,192 | ​ | ​ | 639,869
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Denominator: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Weighted average units outstanding—basic | ​ |  | 292,536 | ​ |  | 289,535 | ​ |  | 291,084 | ​ |  | 288,897
Potentially dilutive common units: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Unvested incentive units | ​ |  | 195 | ​ |  | 217 | ​ |  | 213 | ​ |  | 208
Unvested restricted units | ​ | ​ | 13 | ​ | ​ | 188 | ​ | ​ | 53 | ​ | ​ | 165
Forward equity offering | ​ | ​ | — | ​ | ​ | 44 | ​ | ​ | — | ​ | ​ | 0
Market performance-based awards | ​ |  | 86 | ​ |  | 245 | ​ |  | 112 | ​ |  | 295
Redeemable noncontrolling interest shares (1) | ​ | ​ | 9,428 | ​ | ​ | — | ​ | ​ | 8,568 | ​ | ​ | —
Weighted average units outstanding—diluted | ​ |  | 302,258 | ​ |  | 290,229 | ​ |  | 300,028 | ​ |  | 289,565
Income per unit: | ​ |  |  | ​ |  |  | ​ |  |  | ​ |  |
Basic | ​ | $ | 0.79 | ​ | $ | 0.44 | ​ | $ | 1.20 | ​ | $ | 2.21
Diluted | ​ | $ | 0.75 | ​ | $ | 0.44 | ​ | $ | 1.15 | ​ | $ | 2.21
​
(1) | Pursuant to the Put/Call Agreement with the Rollover Shareholders who remained after the Teraco Acquisition, the Rollover Shareholders have a put right on the Remaining Interest of Teraco that can be settled by the Company in the Company’s shares, in cash, or a combination of cash and shares. Under U.S. GAAP, diluted earnings per share must be reflected in a manner that assumes such put right was exercised at the beginning of the respective periods and settled entirely in shares. The amounts shown represent the redemption value of the Remaining Interest of Teraco divided by the Company's average share price for the respective periods. The put right is exercisable by the Rollover Shareholders for a two-year period commencing on February 1, 2026.
​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 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 September 30, | ​ | Nine Months Ended September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Shares subject to Forward Equity Offering | ​ | 3,591 | ​ | — | ​ | 5,364 | ​ | 6,250
Weighted average of Operating Partnership common units not owned by Digital Realty Trust, Inc. |  | 5,843 |  | 6,429 |  | 5,771 |  | 6,892
Potentially dilutive Series C Cumulative Redeemable Perpetual Preferred Stock |  | — |  | — |  | — |  | 722
Potentially dilutive Series J Cumulative Redeemable Preferred Stock |  | 1,932 |  | 1,320 |  | 1,640 |  | 1,366
Potentially dilutive Series K Cumulative Redeemable Preferred Stock | ​ | 2,032 | ​ | 1,388 | ​ | 1,725 | ​ | 1,437
Potentially dilutive Series L Cumulative Redeemable Preferred Stock | ​ | 3,333 | ​ | 2,276 | ​ | 2,829 | ​ | 2,357
Total |  | 16,731 |  | 11,413 |  | 17,329 |  | 19,024
​

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