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Subsequent Events	12 Months Ended
Subsequent Events	Dec. 31, 2019
Subsequent Events
Subsequent Events	22. Subsequent Even ts On February 11, 2020, the board of directors of Tradeweb Markets Inc. declared a cash dividend of $0.08 per share of Class A common stock and Class B common stock for the first quarter of 2020. This dividend will be payable on March 16, 2020 to stockholders of record as of March 2, 2020.