Mulvaney's Gambling Is Not Investing: A Flow Analysis of the Prediction Market Battle

The overwhelming financial flow in the prediction market sector is sports betting. The two largest platforms, Kalshi and Polymarket, set a new combined weekly volume record of $5.35 billion last week, with Polymarket alone surpassing $1 billion in sports volume for the first time. This isn't a niche activity; the CEO of Kalshi has stated that up to 90% of its activity is sports betting, a figure that underscores the primary driver of user engagement and platform revenue.

This sports betting dominance is directly fueling a massive valuation push. Both platforms are exploring fundraising rounds that could value each company at approximately $20 billion, effectively doubling their valuations from late 2025. The path to these sky-high multiples is built on the same unregulated sports wagering that has attracted users and volume. Yet this growth model carries a critical risk: it relies on a regulatory gray area. The Commodity Futures Trading Commission's approval has allowed these platforms to bypass state and tribal sports betting frameworks, creating a potential for regulatory capture as they seek to scale.

The bottom line is a sector where the money is flowing, but the primary use case is gambling. The pursuit of a $20 billion valuation is a bet on sports betting's continued growth, not on the information discovery functions prediction markets were originally touted for. This creates a structural vulnerability. The platforms' expansion is inextricably linked to a regulatory loophole that could be closed.

The Regulatory Battle: Federal vs. State Jurisdiction

The legal landscape is fracturing, creating a costly uncertainty for platforms. The Commodity Futures Trading Commission (CFTC) is aggressively defending its "exclusive jurisdiction," calling state enforcement actions a "power grab" that ignores federal law. This stance was reinforced in February when a federal court in Tennessee granted a preliminary injunction to Kalshi, siding with the CFTC's view that sports contracts are federally regulated swaps. Yet state regulators in Nevada and Massachusetts are pressing ahead with their own actions, leading to a patchwork of conflicting rulings.

On the other side, a new coalition led by former White House chief of staff Mick Mulvaney is lobbying for state gambling laws to apply. His group, "Gambling Is Not Investing," argues that platforms are simply rebranding sports betting to avoid consumer protections and tax rules. This creates a direct clash: federal regulators say state actions are preempted, while a powerful political coalition says federal inaction is enabling a regulatory loophole.

The risk for the industry is clear. Legal uncertainty forces platforms into expensive contingency planning. With state enforcement actions already underway and federal courts issuing split decisions, the cost of defending multiple jurisdictions could erode the profit margins needed to fund the $20 billion valuation bets. The battle isn't just about legal theory; it's about who gets to write the rules for a multi-billion dollar market.

Catalysts and Risks: What to Watch for Flow Impact

The immediate catalyst is the CFTC's formal rulemaking process. Chairman Mike Selig has launched an "advanced notice of proposed rulemaking", marking the start of a binding regulatory process. This is the first concrete step toward establishing a clear federal framework. The outcome of this process will be the single biggest determinant of regulatory clarity for the sector.

At the same time, state-level enforcement actions remain a critical, unpredictable risk. The recent federal court ruling in Tennessee granting Kalshi a preliminary injunction is a positive signal for the CFTC's jurisdiction. However, ongoing actions in Nevada and Massachusetts create a patchwork of legal exposure. The flow of capital and volume depends on whether platforms can operate without the threat of multiple, conflicting state penalties.

The key flow metric to watch is the emergence of regulatory clarity versus chaos. Platforms are targeting $20 billion valuations and have shown massive volume growth, but this is built on a shaky legal foundation. If the CFTC process delivers a clear, favorable rulebook, it could unlock massive fundraising and accelerate growth. If the legal battle drags on or state actions succeed, the resulting uncertainty will likely cap valuations and stifle the volume expansion needed to justify them.