Kalshi Weekly Volume Tops $3.4B as Sports Dominates, Beating Polymarket
Kalshi posted a new all-time high weekly volume of $3.4 billion for the week ending April 26, according to Artemis data. Notably, Kalshi weekly volume was driven overwhelmingly by Sports markets, which produced $3.0 billion (about 88% of total). That single category processed roughly $1 billion more than Polymarket’s entire weekly volume.
Kalshi’s category split shows Crypto markets at $334.1 million, while Politics contributed just $16.8 million. The Sports surge is attributed to Kalshi’s sports contract design (e.g., per-game moneylines, spreads, and futures), with NBA playoffs cited as a key volume driver. The article also notes Sports event contracts account for over 85% of Kalshi’s turnover, widening the gap versus political and financial markets.
Polymarket recorded $2.0 billion total weekly volume over the same period. While Sports totaled $959.1 million on Polymarket, Politics was far larger there at $507.3 million versus Kalshi’s $16.8 million (around a 30-to-1 disparity). The piece argues both platforms are increasingly serving different user demand: Kalshi is “sports betting” adjacent, while Polymarket remains the preferred venue for elections, macro events, and other global outcomes.
Overall, Kalshi weekly volume strength suggests continued migration toward regulated sports-focused prediction products, while Polymarket retains durability in politics and macro trading.
Neutral
这条消息本质上是“预测市场平台”的竞争格局更新，而不是直接指向链上资产价格或主流加密货币的宏观利好/利空。Kalshi的Kalshi weekly volume创下历史新高，且体育类占比接近90%，说明其流量与订单在向“体育合约型产品”集中；与此同时，Polymarket在Politics仍维持数量级优势，表明用户分层加深。
对交易活动的影响更多体现在两点：
1）短期情绪：平台成交额上升通常会提升市场关注度与参与度，可能带来预测市场相关衍生品的交易活跃度，但不必然传导到BTC/ETH等现货价格。
2）长期结构：如果体育类需求持续迁移，可能促使预测市场生态进一步产品化与细分（例如更丰富的体育合约），而Polymarket在政治/宏观类资产的竞争地位可能保持相对稳定。
类似的情况在传统博彩与事件衍生品领域也常见：当某一平台在特定赛道形成“品类优势”后，资金会先在同类产品间重配，只有当用户规模显著扩大时才会更广泛地影响加密市场风险偏好。因此本次更像“中性”的行业结构变化。