Trading
Kalshi tops $40bn volume for second month as parlays drive growth
Kalshi posted over $40 billion in trading volume for a second consecutive month in August, despite a modest 2.5% decline from July. The growth was driven by combo and parlay products. Rivals are gaining ground as the NFL season approaches.
Why this matters?
Parlay and combo products are becoming the primary volume driver for Kalshi, suggesting structured bets are pulling more trading activity than single-event contracts as the platform scales.
The bigger picture
Kalshi and Polymarket US are now both live on combo and parlay products, with Novig's $125 million first-week volume adding a third platform to the structured-bet race that is reshaping which venue attracts market makers and trader habit-formation before the NFL season peaks.
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