In the past two weeks, there was 61 total ‘boosted’ parlays across these major sportsbooks; BetMGM, FanDuel, Caesars and Barstool. 55 of those boosted parlays lost.
Now, we will acknowledge the odds of these parlays, because even though some of them are boosted, they are still relatively low probability bets. Given the data imported and scraped from Sports Betting Dime, we see that the average odds for these parlays was +522.38.
If a user of these major sportsbook placed $10 on each of these parlays over the two weeks, that unlucky user would have lost $416.98, with a return on investment of -216.03%.
These shocking insights would suggest a strategy to identify what the boosts are for specific games, and pinpoint if there are any individual markets to target a ‘fade’ of these boosted parlays. The sportsbooks offer these ‘boosts’ and ‘promotions’ for a reason!
Here is a copy of the scraped data and calcuations:
All-Time Bets 
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