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ACQUISITIONS - Pro forma (Details) - FRG Investment - USD ($) | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2023
Business Acquisition [Line Items] |  |
Revenues | $ 406,278,000 | $ 838,368,000
Net income attributable to B. Riley Financial, Inc. | 44,096,000 | 58,965,000
Net income attributable to common shareholders | $ 42,081,000 | $ 54,938,000
Basic income per share (in dollars per share) | $ 1.39 | $ 1.80
Diluted income per share (in dollars per share) | $ 1.37 | $ 1.76
Weighted average basic shares outstanding (in shares) | 30,330,025 | 30,502,179
Weighted average diluted shares outstanding (in shares) | 30,745,155 | 31,173,794

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