Polymarket still leads search demand despite Kalshi's trading dominance

Polymarket retained the larger share of branded search demand through August, even as Kalshi gained ground, according to Gambling Insider’s account of data tracked by Blask.

Search lead narrows

Blask tracked branded searches from January to August. Over that period, Polymarket’s share declined from 74.3% to 57.8%, while Kalshi’s increased from 23.1% to 35.8%.

Those figures put the gap at 22 percentage points in August, compared with 51.2 percentage points in January. Polymarket remained ahead, but the distance between the two platforms narrowed substantially.

Attention versus trading

Gambling Insider reported that Polymarket’s search lead persisted despite Kalshi’s dominance in trading. The available summary references August trading volume but does not supply the figures, limiting any numerical comparison between search demand and activity.

The distinction matters: branded search share measures a different kind of engagement from trading volume. The supplied figures establish a shift in relative search demand, not how that demand translated into trades.

What it means for prediction markets

• Leadership depends on the measure. Polymarket led branded search demand, while Gambling Insider identified Kalshi as dominant in trading.
• Kalshi narrowed the attention gap. Its search share rose from 23.1% to 35.8% between January and August.
• Conversion remains unclear. Without the August volume figures or data linking searches to trades, the available material cannot establish how closely attention tracked trading activity.