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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2019
Tradeweb Markets LLC |
Entity Information [Line Items] |
Schedule of basic and Diluted earnings per share |
|  | Successor |  | Successor |  |  | Predecessor |  | Predecessor
|  | Three Months Ended |  | October 1, 2018 to |  |  | January 1, 2018 to |  | Year Ended
|  | March 31, |  | December 31, |  |  | September 30, |  | December 31,
EPS: Pre-IPO net income attributable to Tradeweb Markets LLC(1) |  | 2019 |  | 2018 |  |  | 2018 |  | 2017
|  |  | (in thousands, except share and per share amounts)
Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |
Pre-IPO net income attributable to Tradeweb Markets LLC |  | $ | 42,352 |  | $ | 29,307 |  |  | $ | 130,160 |  | $ | 83,648
Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average LLC Interests outstanding - Basic |  |  | 222,222,197 |  |  | 222,221,628 |  |  |  | 215,365,920 |  |  | 212,568,635
Dilutive effect of equity-settled PRSUs |  |  | 1,098,260 |  |  | 22,223 |  |  |  | — |  |  | —
Weighted average LLC Interests outstanding - Diluted |  |  | 223,320,457 |  |  | 222,243,851 |  |  |  | 215,365,920 |  |  | 212,568,635
Earnings per share - Basic |  | $ | 0.19 |  | $ | 0.13 |  |  | $ | 0.60 |  | $ | 0.39
Earnings per share - Diluted |  | $ | 0.19 |  | $ | 0.13 |  |  | $ | 0.60 |  | $ | 0.39
| (1) |  | Earnings per share and weighted average shares outstanding for the pre-IPO periods have been computed to give effect to the Reorganization Transactions, including the amendment and restatement of the TWM LLC Agreement to, among other things, (i) provide for LLC Interests and (ii) exchange all of the then existing membership interests in TWM LLC for LLC interests.
The following table summarizes the basic and diluted earnings per share calculations for Tradeweb Markets Inc. (post-IPO period):
|  | Successor |
|  | Nine Months Ended |
EPS: Post-IPO net income attributable to Tradeweb Markets Inc. |  | December 31, |
(in thousands, except share and per share amounts) |  | 2019 |
Numerator: |  |  |  |
Post-IPO net income attributable to Tradeweb Markets Inc. |  | $ | 83,769 |
Denominator: |  |  |  |
Weighted average shares of Class A and Class B common stock outstanding - Basic |  |  | 148,013,274 |
Dilutive effect of equity-settled PRSUs |  |  | 2,464,137 |
Dilutive effect of options |  |  | 6,062,835 |
Weighted average shares of Class A and Class B common stock outstanding - Diluted |  |  | 156,540,246 |
Earnings per share - Basic |  | $ | 0.57 |
Earnings per share - Diluted |  | $ | 0.54 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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