Kalshi, a regulated US-based prediction market, has achieved a significant milestone by surpassing $4 billion in trading volume over the past 30 days. This growth is driven by the expansion of sports prediction markets, strategic technology partnerships, and increased participation from institutional investors. Co-founders Tarek Mansour and Luana Lopes Lara view this achievement as a step towards mainstream adoption of prediction markets. Additionally, Kalshi has secured a $5 billion valuation following a recent funding round in October 2025, with backing from prominent investors such as a16z and Sequoia.