July volume hit an all-time high of $50.59B — then the World Cup ended

July set a new volume record

Kalshi, Polymarket and Polymarket US generated a combined $50.59B in trading volume in July, a monthly record, according to The Block data cited by gamblerss.com.

The three platforms’ combined volume increased 7.8% from June. The milestone came in the month the World Cup ended, leaving a question for subsequent reporting: how much activity would persist after the tournament?

Kalshi recorded $37.7B in July volume, up 14% month over month. Its growth outpaced the combined market’s increase, making it the largest contributor to the reported total.

The available summary does not provide separate volume figures for Polymarket or Polymarket US. With the source’s full text unavailable, it also does not establish how much July trading was tied to the World Cup or whether volume declined afterward.

What it means for prediction markets

• The record establishes a benchmark, not a post-tournament trend. July’s $50.59B total alone cannot show whether activity remained elevated after the World Cup.
• Kalshi’s growth exceeded the aggregate pace. Its 14% monthly increase compares with 7.8% across the three platforms, though the missing platform breakdown limits further comparisons.
• Volume is not a measure of forecast quality. The supplied figures describe trading activity; they do not establish market accuracy or the reliability of individual contract prices.