TOTAL VOLUME:
$134.1b
24H VOL:
$133,388,117
24H TRANSACTIONS:
2,388,728,490
OPEN INTEREST:
$1,436,095,462
405,232
Markets across
30,526
events
MATCHED EVENTS:
2,693
PLATFORM COVERAGE:
5
Polymarket:
39%
VS.
Kalshi:
61%
Closed: Jul 21, 7:23 PM EST
Kalshi
This event group covers the halftime result of an Avaí FC vs. América FC match scheduled for July 21, 2026 in the Brasileiro Serie B. Markets span three outcome types (Avaí leading, draw, América leading) on Polymarket and three over/under goal-count thresholds on Kalshi, all measuring the first 45 minutes of regular play plus stoppage time.
In the upcoming Brazil Serie B game between Avaí FC and América FC, scheduled for July 21, 2026 at 6:30 PM ET: This event contains halftime result markets for home, draw, and away outcomes within the first 45 minutes of regular play plus stoppage time.
This event measures the total goals scored by both teams combined during the first half of the Avai vs America FC match scheduled for July 21, 2026. Resolution is based on whether the combined first-half goal total exceeds specified thresholds: 0.5 goals, 1.5 goals, or 2.5 goals. Only goals scored during the first 45 minutes plus stoppage time count; goals from the second half, extra time, or penalties do not apply. If the match is cancelled or rescheduled more than two weeks away, the market resolves to a fair price in accordance with standard rules.
Prediction markets and traditional sportsbooks price outcomes using different mechanisms. Sportsbooks set lines based on in-house models and manage risk through margin; prediction markets rely on continuous trader supply and demand, which can reflect crowd sentiment more dynamically. Prediction market odds often incorporate late-breaking information faster because any trader can adjust their position instantly, whereas sportsbook lines update less frequently. Over time, prediction markets have shown competitive or superior accuracy on sports outcomes, particularly when liquidity is deep. However, sportsbook odds typically offer tighter spreads and faster settlement, while this market rewards patient traders who spot mispricings early.
Team news—injuries to key players, lineup announcements, or tactical shifts—can significantly reprrice halftime expectations. Recent form, head-to-head records, and home-field advantage often influence early trading. Weather conditions and pitch quality on match day may favor one side's style of play. Late injury confirmations or surprise starting lineups typically trigger sharp price movement in the final hours before kickoff. Social media sentiment and expert predictions can also sway casual traders. Traders monitoring team news feeds and official announcements often gain an edge by positioning ahead of public consensus shifts. Volume spikes often precede major lineup reveals or injury updates.