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RUSH STREET INTERACTIVE RUSH STREET INTERACTIVE ANNOUNCES SECOND QUARTER 2021 RESULTS AND RAISES FULL YEAR 2021 GUIDANCE Exhibit 99.1 - Second Quarter Revenue of $ 122.8 Million , up 89 % Year - over - Year - Full Year 2021 Revenue Guidance Raised to between $ 465 and $ 495 Million - CHICAGO - August 12 , 2021 – Rush Street Interactive , Inc. ( NYSE : RSI ) ( " RSI " ) , a leading online casino and sports betting company in the United States , today announced financial results for the second quarter ended June 30 , 2021 . Second Quarter 2021 Financial Highlights Revenue was $ 122.8 million during the second quarter of 2021 , an increase of 89 % , compared to $ 65.0 million during the second quarter of 2020 . • Net loss was $ 14.0 million during the second quarter of 2021 , compared to a net loss of $ 50.6 million during the second quarter of 2020 . Adjusted EBITDA [ ¹ ] loss was $ 6.6 million during the second quarter of 2021 , compared to an Adjusted EBITDA of $ 3.7 million during the second quarter of 2020 . Adjusted advertising and promotions expense was $ 36.9 million , or 30 % of revenue , during the second quarter of 2021 , compared to $ 7.4 million during the second quarter of 2020 . • Real - Money Monthly Active Users ( " MAUs " ) in the United States for the second quarter of 2021 were up 128 % year - over - year with average revenue per MAU ( " ARPMAU " ) of $ 377 during the second quarter of 2021 . • As of June 30 , 2021 , RSI had $ 361 million of unrestricted cash and cash equivalents . Richard Schwartz , Chief Executive Officer of RSI , said , “ We are very pleased with the continued execution of our business strategy and remain focused on providing a premiere user experience for our customers . In addition to successfully growing revenues in existing markets , we have made significant progress in securing access opportunities to new markets . Earlier today , we announced an extremely exciting partnership with the State of Connecticut , where we will be the exclusive partner of the Connecticut Lottery offering both mobile and retail sports wagering , and be one of only three operators operating in the state . This week , we also announced an agreement for market access opportunities in Louisiana , Mississippi , and New Mexico , with the latter two subject to those states passing mobile gaming legislation . Earlier this week , we also submitted mobile sports betting applications in New York and Arizona . While new market access is a key pillar to our growth story , we also continue to work diligently to expand our exclusive content offering for both sport betting and casino games as exemplified by new partnerships with GTG Network for co - exclusive sports betting information and Boom Entertainment for exclusive casino content . Stay tuned for the launch of new and exclusive offerings in coming quarters . 1 This is a non - GAAP financial measure . Please see " Non - GAAP Financial Measures " for more information about this non - GAAP financial measure and " Reconciliations of GAAP to Non - GAAP Financial Measures " for a reconciliation of the most comparable measure calculated in accordance with GAAP to this non - GAAP financial measure .