iBET ETF Insights: A survey from Fox Business showed that 60% of respondents who bet on the NCAA tournament did not fill out a bracket, with only 8% of bettors surveyed solely filling out a bracket. 49% of bettors surveyed said they were less interested in filling out brackets now that there is legalized online sports betting. Since last years tournament 29 million more Americans can wager from their home states, with many new up and coming markets this number will expand. The American gaming association predicted $3.1 billion in wagers this years tournament, with 76% of those bets placed outside of brackets.