Kalshi non-sports weekly volume tops $1B, challenges Polymarket

Kalshi says its non-sports weekly volume has crossed $1B for the first time, up ~28x from $35.2M a year ago. This growth is changing the balance in prediction markets: Kalshi’s non-sports weekly volume is now more than 2.2x Polymarket’s, reaching about $1.7B versus Polymarket’s ~$688.9M in the first two weeks of May. The latest report links the jump in Kalshi’s non-sports weekly volume to broad macro contracts (Fed decisions, CPI, rate expectations), expanding geopolitical markets (including an Iran-related contract later frozen due to disputed positions), and rising political demand ahead of the 2026 midterms. It also points to increased crypto participation—traders using BTC and ETH price levels as binary hedges rather than options. Why it matters for traders: Kalshi recently closed a $1B Series F at a ~$22B valuation. Meanwhile, sports markets face state-level regulatory pressure, which makes non-sports appear to be the more resilient growth engine. If this trend sustains into major catalysts (midterms and the FIFA World Cup, plus future presidential markets), it could support steadier demand for crypto-linked hedging flows. Traders should watch whether Kalshi’s non-sports weekly volume momentum continues to pull incremental hedging activity tied to BTC and ETH.
Bullish
This is a bullish read for crypto price action indirectly. The core update is that Kalshi’s non-sports weekly volume has crossed $1B and is now materially larger than Polymarket’s non-sports segment. Because the report also highlights increased crypto participation—specifically traders using BTC and ETH price levels as binary hedges—sustained volume momentum on Kalshi’s non-sports side could support continued hedging demand tied to BTC/ETH. Short term, the “non-sports weekly volume” surge can attract incremental hedging flows around near-term macro and geopolitical contract outcomes, which may increase day-to-day positioning activity. Long term, if regulatory pressure keeps sports constrained while non-sports keeps scaling, that would reinforce the narrative of a steadier channel for crypto-linked hedging. Net effect on BTC and ETH prices is likely positive (bullish), though the impact should remain indirect because this is primarily volume/flow in prediction markets rather than a direct crypto spot catalyst.