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Earnings per Share / Unit - Operating Partnership's Computation of Net Income per Common Unit (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Jun. 30, 2024 | Mar. 31, 2024 | Sep. 30, 2023 | Jun. 30, 2023 | Mar. 31, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Numerator: |  |  |  |  |  |  |  |
Net income | $ 87,640 | $ 108,534 | $ 128,095 | $ 88,092 | $ 115,414 | $ 137,699 | $ 324,269 | $ 341,205
Less: |  |  |  |  |  |  |  |
Preferred distributions | 3,486 | 3,486 | 3,486 | 3,486 | 3,486 | 3,486 | 10,458 | 10,458
Allocation to participating securities | 313 |  |  | 238 |  |  | 963 | 854
Numerator for income per common share/unit–basic | 73,508 |  |  | 73,875 |  |  | 274,289 | 288,753
Numerator for income per common share/unit–diluted | $ 73,508 |  |  | $ 73,875 |  |  | $ 274,289 | $ 288,753
Effect of dilutive securities: |  |  |  |  |  |  |  |
Share-based compensation plan and forward sale equity contract | 619,170 |  |  | 498,659 |  |  | 537,610 | 455,692
American Homes 4 Rent, L.P. |  |  |  |  |  |  |  |
Numerator: |  |  |  |  |  |  |  |
Net income | $ 87,640 | $ 108,534 | $ 128,095 | $ 88,092 | $ 115,414 | $ 137,699 | $ 324,269 | $ 341,205
Less: |  |  |  |  |  |  |  |
Preferred distributions | 3,486 |  |  | 3,486 |  |  | 10,458 | 10,458
Allocation to participating securities | 313 |  |  | 238 |  |  | 963 | 854
Numerator for income per common share/unit–basic | 83,841 |  |  | 84,368 |  |  | 312,848 | 329,893
Numerator for income per common share/unit–diluted | $ 83,841 |  |  | $ 84,368 |  |  | $ 312,848 | $ 329,893
Denominator: |  |  |  |  |  |  |  |
Weighted-average common units outstanding - basic (in shares) | 418,358,446 |  |  | 413,803,253 |  |  | 418,134,349 | 413,042,416
Effect of dilutive securities: |  |  |  |  |  |  |  |
Share-based compensation plan and forward sale equity contract | 619,170 |  |  | 498,659 |  |  | 537,610 | 455,692
Weighted-average common units outstanding-diluted (in shares) | 418,977,616 |  |  | 414,301,912 |  |  | 418,671,959 | 413,498,108
Net income per common share/unit |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ 0.20 |  |  | $ 0.20 |  |  | $ 0.75 | $ 0.80
Diluted (in dollars per share) | $ 0.20 |  |  | $ 0.20 |  |  | $ 0.75 | $ 0.80

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