Kalshi and Polymarket are considering fundraising rounds that could double their current valuations to around $20 billion. Kalshi, which operates under Commodity Futures Trading Commission approval, is currently valued at $11 billion, while Polymarket is at $9 billion. Both platforms lead the prediction markets sector, with Kalshi's open interest at over $400 million and Polymarket’s at $360 million, alongside substantial weekly volume figures. The talks come amid increasing investor interest in decentralized markets and regulatory scrutiny.