With three No. 1 seeds—Arizona (32-2), Michigan (31-3), and Duke (32-2)—advancing to the Elite Eight alongside surging Illinois, trader consensus on Polymarket reflects a tightly contested 2026 NCAA Tournament, as evidenced by Arizona's slim 27.4% implied probability edge over Michigan (23.5%) and Duke (21.5%). Recent Sweet 16 results drove the bunching: Duke's gritty 80-75 survival over No. 5 St. John's, Michigan's dominant 90-point rout of its opponent, Arizona's steady West Regional path (56% to advance), and Illinois' 71% South Regional favoritism amid a deep Big Ten contingent. Defending champion Florida's early exit opened the field, while paths converge with cross-region threats like Purdue and Iowa, underscoring upset potential in bracket matchups and rest advantages.
Experimental AI-generated summary referencing Polymarket data · UpdatedArizona 27.4%
Michigan 24%
Duke 22%
Illinois 12.0%
$22,157,256 Vol.
$22,157,256 Vol.
Arizona
27%
Michigan
24%
Duke
22%
Illinois
12%
Connecticut
6%
Purdue
5%
Tennessee
2%
Iowa
1%
Arizona 27.4%
Michigan 24%
Duke 22%
Illinois 12.0%
$22,157,256 Vol.
$22,157,256 Vol.
Arizona
27%
Michigan
24%
Duke
22%
Illinois
12%
Connecticut
6%
Purdue
5%
Tennessee
2%
Iowa
1%
If it is impossible for a team to win the 2026 NCAA Men’s Basketball Tournament according to the rules of the competition (i.e. they are eliminated) , the corresponding market will immediately resolve to “No”.
If for any reason no winner is declared by December 31, 2026, 11:59 PM ET, this market will resolve to "Other".
The resolution source for this market will be information from the NCAA.
Market Opened: Oct 31, 2025, 7:31 PM ET
Resolver
0x2F5e3684c...If it is impossible for a team to win the 2026 NCAA Men’s Basketball Tournament according to the rules of the competition (i.e. they are eliminated) , the corresponding market will immediately resolve to “No”.
If for any reason no winner is declared by December 31, 2026, 11:59 PM ET, this market will resolve to "Other".
The resolution source for this market will be information from the NCAA.
Resolver
0x2F5e3684c...With three No. 1 seeds—Arizona (32-2), Michigan (31-3), and Duke (32-2)—advancing to the Elite Eight alongside surging Illinois, trader consensus on Polymarket reflects a tightly contested 2026 NCAA Tournament, as evidenced by Arizona's slim 27.4% implied probability edge over Michigan (23.5%) and Duke (21.5%). Recent Sweet 16 results drove the bunching: Duke's gritty 80-75 survival over No. 5 St. John's, Michigan's dominant 90-point rout of its opponent, Arizona's steady West Regional path (56% to advance), and Illinois' 71% South Regional favoritism amid a deep Big Ten contingent. Defending champion Florida's early exit opened the field, while paths converge with cross-region threats like Purdue and Iowa, underscoring upset potential in bracket matchups and rest advantages.
Experimental AI-generated summary referencing Polymarket data · Updated


Beware of external links.
Beware of external links.
Frequently Asked Questions