Rapid Valuation Climb Signals Strong Investor Interest

Kalshi, the New York-based operator of event contracts and emerging financial products, has entered discussions with major investors to raise approximately $1 billion at a valuation approaching $40 billion. The proposed round would lift the company’s value by about 82 percent from its $22 billion mark after a prior $1 billion Series F close in May.

Existing investors Sequoia Capital and Wellington Management are reportedly leading the negotiations, while Tiger Global Management and Dragoneer Investment Group are among those weighing participation. The transaction remains unclosed, with sources indicating it could finalize in the coming weeks.

Reports of potential $40 billion funding first surfaced in June, with the latest details emerging on September 29. Kalshi, which declined to comment, and several named investors did not respond immediately to inquiries.

Volume Surge Fuels Institutional Demand

Trading activity on Kalshi has expanded sharply, driven in part by institutional participation. The platform disclosed that annualized trading volume climbed from $52 billion to $178 billion over six months following its May raise, while institutional volume grew 800 percent.

More recent data shows Kalshi capturing a leading share of the sector. In July, prediction markets recorded a record monthly volume of $50.6 billion, with Kalshi handling $37.7 billion compared with $12.9 billion across Polymarket’s U.S. and international operations.

The company is broadening its offerings beyond initial event contracts into cryptocurrency derivatives and other financial products. This shift positions Kalshi as a potential one-stop venue for traders, competing with established derivatives exchanges such as CME Group and Intercontinental Exchange.

Co-founder Tarek Mansour has previously discussed the prospect of a public listing, and early informal IPO conversations have been reported, though no formal filing or timeline has been announced. A Form D filing in August confirmed notice of a nearly $1.5 billion private offering, with $1.12 billion already sold.

Regulatory Landscape and Competitive Pressure

Kalshi operates under U.S. Commodity Futures Trading Commission oversight as a designated contract market, a status granted in 2020 and expanded in 2025 to include intermediated futures trading. The platform has faced ongoing legal challenges in state jurisdictions where some event contracts are contested as gambling.

A Sixth Circuit Court of Appeals ruling on September 25 upheld state authority to regulate certain sports-related contracts in Ohio and Tennessee, prompting Kalshi to challenge the decision. The company maintains federal oversight applies, and the CFTC has engaged with state regulators on the matter.

Meanwhile, rival Polymarket is separately pursuing a roughly $1 billion funding round at a potential $20 billion valuation. Both platforms are drawing heightened attention from lawmakers examining investor protections and market oversight as prediction markets expand into new asset classes.

Volume Incentive Program Ends

Kalshi is winding down its volume incentive program, with the change effective no earlier than October 13. The program previously rewarded traders from a pool based on their share of eligible volume to boost liquidity.

Industry data indicates the timing aligns with the platform’s maturation, as it shifts toward relying on organic growth and institutional flows to sustain activity.

Kalshi has increased its market share relative to Polymarket over the past year, according to Dune Analytics. The competition is expected to intensify as both platforms push into broader financial markets while navigating regulatory scrutiny.

Polymarket, the nearest large rival, is separately discussing a roughly $1 billion capital raise.

Overall, the funding discussions and business expansion reflect growing professional interest in prediction markets. The sector continues to evolve amid legal and oversight questions, with Kalshi at the forefront of innovation and change.