The state soft launched its legal online sports betting and igaming market on October 12, before proceeding with a full launch on October 19.
Players won a total of $48.7m wagering on sports online during the period, which, after deducting federal tax payments and promotional bet costs, left $3.5m in revenue for the three licensed operators in Connecticut.
The Mashantucket Pequot Tribe, which offers online sports wagering via a partnership with DraftKings, led the market with $2.7m in revenue from $23.8m in wagers.