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Underdog leads venue growth as Kalshi retains dominant volume share

DeFi Rate ranked Underdog Exchange first for 30-day growth, ahead of DraftKings Predictions at 122 percent and Novig at 115 percent. Kalshi held 75.6 percent of 30-day venue volume in the same tracker, with Polymarket US second at 11.6 percent.

Underdog Exchange topped DeFi Rate’s ranking for 30-day prediction-market volume growth, posting a 157 percent increase. The figures appeared in reporting published Oct 31, 2026, at 8:15 PM ET.

Growth rankings differ from volume leadership

According to DeFi Rate, DraftKings Predictions followed Underdog Exchange with 122 percent growth over 30 days. Novig ranked behind it at 115 percent.

The same tracker put Kalshi’s share of 30-day venue volume at 75.6 percent. Polymarket US ranked second by that measure, accounting for 11.6 percent.

Those figures distinguish growth momentum from market size: Underdog Exchange led the percentage-growth ranking, while Kalshi accounted for most of the tracked volume. The supplied summary did not include absolute trading volumes for the venues.

What it means for prediction markets

  • Growth and share measure different things. Underdog Exchange’s 157 percent increase does not establish that it leads in trading volume.
  • Volume remains concentrated in the tracker. Kalshi’s 75.6 percent share substantially exceeds Polymarket US’s second-place 11.6 percent.
  • The growth comparison has limits. Without absolute volumes, the reported percentage increases do not show which venue added the most trading activity.
KalshiPolymarketDraftKingsInfiniti MarketsInfiniti Signals

Sources & attribution

Published
  1. Source
    DeFi Ratedefirate.com
    Publisher
    https://defirate.com
    Source URL
    The feed did not publish this story's article address.

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