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Business Segment and Geographic Information - Revenue by Client Sector (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Business Segment and Geographic Information |  |  |
Total revenue | $ 1,188,781 | $ 1,076,447 | $ 892,659
Operating expenses | 776,208 | 717,619 | 629,304
Operating income | 412,573 | 358,828 | 263,355
Institutional |  |  |
Business Segment and Geographic Information |  |  |
Total revenue | 719,211 | 668,812 | 554,330
Wholesale |  |  |
Business Segment and Geographic Information |  |  |
Total revenue | 273,189 | 254,927 | 185,456
Retail |  |  |
Business Segment and Geographic Information |  |  |
Total revenue | 110,468 | 70,566 | 76,352
Market Data |  |  |
Business Segment and Geographic Information |  |  |
Total revenue | $ 85,913 | $ 82,142 | $ 76,521

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