Two of the largest U.S. prediction market platforms, Polymarket and Kalshi, are reportedly in early-stage talks with potential investors to raise new capital at valuations of roughly $20 billion each on a post-money basis, according to a Wall Street Journal report published over the weekend. Citing “people familiar with the matter,” the report cautions that the discussions are preliminary and could collapse or close at lower figures.
From $9B to $20B: The Valuation Leap
Kalshi, founded by Tarek Mansour and Luana Lopes Lara in 2018, raised $1 billion in December 2025 at an $11 billion valuation from investors including Paradigm and Sequoia Capital. Polymarket, founded by Shayne Coplan in 2020, was valued at approximately $9 billion in October 2025 after Intercontinental Exchange (ICE), owner of the NYSE, agreed to invest up to $2 billion. If the new fundraising goals are met, both firms would nearly double their valuations within months, underscoring the surging investor appetite for prediction markets.
Volume Explosion: $26.7 Billion Monthly
User demand for event-driven trading has skyrocketed. According to data from Dune Analytics and analyst @datadashboards, combined notional volume across seven major prediction market platforms reached $26.7 billion in January 2026. In the final week of 2025, weekly volume surpassed $5.3 billion, and the first week of 2026 set yet another record. Markets have expanded far beyond U.S. elections to include sports (NFL, college football) and geopolitical events. Contracts on topics such as “Will the U.S. strike Iran?” or “Will Iran’s Supreme Leader be removed?” have drawn both high volume and scrutiny from U.S. lawmakers.
Regulatory Battleground: Federal vs. State Licensing
Kalshi and Polymarket are also locked in ongoing legal disputes with state regulators over whether their federal approvals are sufficient to operate nationwide without obtaining separate gambling licenses in every state. These lawsuits could determine how prediction markets grow across the United States. Despite the regulatory haze, both companies are eager to secure fresh capital to fuel expansion and fend off potential competitors.
Investor Sentiment and Market Outlook
The reported $20 billion valuation target signals that both companies—and their backers—believe prediction markets are poised to become a mainstream asset class. If successful, the raises would solidify Polymarket and Kalshi’s dominance and likely attract more entrants. However, the unresolved regulatory questions cast a shadow over the industry. Investors are closely watching how the platforms navigate these legal challenges while continuing to innovate and grow trading volumes. The next few months will be critical in defining whether prediction markets evolve into a regulated risk-management tool or remain a contentious hybrid of gambling and finance.