NCAA Tournament 2026 Betting Percentages: Trends, Line Movement, & Sharp Money

NCAAB Line Movement for March Madness

Beyond tracking March Madness betting percentages, reading line movement is a crucial tool for informed bettors. Oddsmakers released First Round lines shortly after the Selection Sunday bracket reveal, and those numbers have shifted as wagers have come in.

Small adjustments usually signal that there hasn’t been enough money on either side to move the line much. Meanwhile, notable shifts often reflect large wagers that force oddsmakers to react. Sharp bettors look to attack soft opening numbers, and their early action is frequently what drives those bigger moves.

Here, I’ve outlined the most notable NCAA Tournament line movement (March 15 to 18) on the board at Lucky Rebel:

• • Wisconsin Badgers -12.5 to -10 vs. High Point
  • Gonzaga Bulldogs -18.5 to -20.5 vs. Kennesaw State
  • Illinois Fighting Illini -22.5 to -24.5 vs. Pennsylvania
  • UConn -18.5 to -20.5 vs. Furman
  • Purdue -23.5 to -25.5 vs. Queens NC

The Wisconsin Badgers opened as 12.5-point favorites, but public money drove that number down to as low as 9.5. They’re now sitting as 10-point favorites, with 65% of the betting handle on High Point. We’re seeing a similar pattern with the Gonzaga Bulldogs, UConn Huskies, and Purdue Boilermakers.

Gonzaga’s spread has moved two points in their favor, with 71% of the money backing them to cover. UConn’s line has also jumped by two points, as 62% of the handle and 72% of tickets are on the Huskies.

In both cases, the market is behaving as you’d expect: when one side attracts most of the money, sportsbooks adjust the line to balance their risk. The same applies to the Purdue Boilermakers against Queens NC, who have 85% of tickets and 68% of money backing them to cover.

The interesting outlier is the Illinois Fighting Illini. Despite 62% of the betting handle and 52% of wagers coming in on Pennsylvania, Illinois’ point spread has actually increased.

Sharp vs. Square Betting March Madness

Sharp money on the NCAA Tournament refers to where the most knowledgeable and successful bettors are placing their wagers, often including professionals.

On the other hand, square bettors are typically recreational. They tend to rely on gut feelings or simply choose the team they perceive as “better,” without doing meaningful research or analysis.

There isn’t a single, definitive signal that shows exactly where the sharp money is going, but there are several useful indicators. Reading NCAA Tournament line movement is key, as in the Illinois example above, as well as tracking how public money is distributed.

One trend to watch is when the betting handle (the total amount of money wagered) is significantly higher than the percentage of bets placed on that side.

When this happens, it can suggest that larger, potentially sharper bettors are backing that team. I’ve highlighted the games that fit this criterion below:

While this isn’t a cheat code for making free money, it does show where the big bets are going in the public square. The vast majority of wagers come from small, recreational bettors, so they dominate the total percentage of bets.

When the handle is significantly higher than the percentage of bets, it’s generally understood that large, sharp wagers are likely causing the gap.