**Kalshi**, the largest prediction market in the U.S., has secured a **$22 billion valuation**, edging ahead of its main competitor **Polymarket**. This valuation comes from a **$1 billion investment round** led by Coatue Management, as reported by the Wall Street Journal. Kalshi's valuation has doubled in about two months, highlighting rapid growth in the prediction market sector.

### Intense Rivalry with Polymarket
Kalshi and Polymarket are locked in a **heavyweight duel** for dominance. Earlier in March, both companies were eyeing valuations around $20 billion each. Recently, Polymarket made headlines by announcing an exclusive partnership with the MLB, just in time for the new baseball season.

The competition has sparked **novel promotions**: Kalshi offered free groceries to New Yorkers in February, prompting Polymarket to open a pop-up grocery store a week later.

### Regulatory Background and Popularity
Kalshi's success is partly due to a **2020 Commodity Futures Trading Commission (CFTC) decision** granting it approval. It gained significant popularity in January 2025 by introducing **sports wagers**.

In contrast, Polymarket was banned from operating in the U.S. in 2022 after the CFTC found it offered event contracts without approval. The FBI raided CEO Shayne Coplan's apartment in 2024, but in 2025, the CFTC approved Polymarket's return to the U.S.

### Controversies and Legal Challenges
The rise of prediction markets has not been without issues. Arizona recently filed **criminal charges against Kalshi** for illegal gambling, and the company faces over 20 lawsuits regarding its legal status. Concerns about **insider trading** have also emerged, such as a Polymarket trader making over $400,000 on bets related to Nicolás Maduro's ouster.

This dynamic landscape underscores the **high-stakes competition** and regulatory hurdles shaping the future of prediction markets.

The startup has doubled its valuation in about two months.

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