Kalshi's legal battle over swap classification hinges on trading data showing minimal financial market activity

Kalshi's high-stakes legal battle over whether its prediction markets qualify as swaps under the Commodity Exchange Act has reached a critical juncture as newly analyzed trading data reveals the overwhelming dominance of sports and cryptocurrency contracts over traditional financial instruments. A comprehensive examination of August trading activity shows that only $64.3 million - a mere 0.6% of the $11.4 billion staked on the platform - went to interest rates, inflation, elections and index levels, the types of contracts with the strongest claim to being legitimate swaps under federal law.

The legal landscape and conflicting rulings

The exchange's defense strategy hinges on a sweeping claim that all its contracts, from baseball game outcomes to Federal Reserve decisions, qualify as swaps under the Commodity Exchange Act. This legal argument has produced sharply divergent results in federal courts. In April 2026, a divided Third Circuit panel ruled in Kalshi's favor, affirming an injunction that allowed the exchange to continue operating in New Jersey. The majority opinion took an expansive view of the statutory language, finding that sports outcomes clearly carry economic consequences for various stakeholders and therefore meet the requirement of being 'associated with a potential financial, economic, or commercial consequence.'

This position suffered a significant setback on August 28 when the Ninth Circuit reached the opposite conclusion in KalshiEX, LLC v. Assad. The appellate court rejected the notion that sports event contracts qualify as swaps, explicitly stating that federal law does not preempt state gambling regulation in this context. The Ninth Circuit drew important distinctions between an event and its outcome, emphasized that the economic consequence must be direct to the contracting parties rather than diffuse, and warned that an overly broad reading could extend to trivial activities like 'bingo games or ping-pong tournaments.' Most critically, the court found these contracts perform no genuine risk-transfer function as they're disconnected from any actual exposure the parties carry.

Trading patterns undermine legal position

The actual composition of Kalshi's trading volume presents substantial challenges to its legal argument. In August 2026, a striking 61% of all staked money - approximately $5.6 billion - rode on single-game sports markets. When combined with multi-leg combo bets and smaller league offerings, the sports-related share of trading rises to about 61% of total volume. The second largest category, accounting for roughly 34% or $3.9 billion, consisted of short-dated crypto and commodity contracts, particularly bitcoin priced in 15-minute windows which alone generated $2.7 billion in trading activity.

These categories, whose classification as swaps is hotly contested, represent approximately 95% of all staked money on the platform. Meanwhile, the undisputed swap contracts - those tied to interest rates, inflation prints, index levels and government funding deadlines - have never exceeded 2.5% of monthly volume in 2026, peaking in January during a Federal Reserve chair nomination period. The trend is particularly telling: while Kalshi's overall volume tripled from $3.8 billion in January to $11.4 billion in August, macro and political contract volume actually declined by about a third from $95.8 million to $64.3 million during the same period.

Reporting methods obscure true picture

Kalshi's volume reporting practices have created significant discrepancies in how its business is perceived. The exchange publishes figures counting every contract at its full $1 face value, regardless of actual trade price. This methodology produced a staggering $40 billion August volume figure that vastly overstates real money at risk. When calculated based on actual trade prices - which averaged just 28.6 cents per contract - the August volume was a more modest $11.4 billion.

This discrepancy is especially pronounced in Kalshi's parlays or 'combo' bets. Under the face-value method, these multi-leg wagers appear to represent $17.8 billion or 44% of August volume. However, when measured by actual money staked - with most combo contracts trading below 2 cents - they accounted for just $1.1 billion or about 10% of real activity. This reporting approach has allowed Kalshi to present an image of balance between financial and sports markets that doesn't reflect the actual concentration of customer money in contested contract types.

Industry implications and regulatory future

The split between federal appeals courts has set the stage for potential Supreme Court review that could reshape the regulatory landscape for prediction markets. Mike Roselli, Chief Regulatory Officer at 365Prediction, told Gambling Insider: 'With the appellate courts now split after the Ninth Circuit's recent decision, at this point Supreme Court review feels like a matter of when, not if.' The outcome could determine whether approximately two dozen states retain regulatory authority over sports-based prediction markets or whether they fall exclusively under CFTC jurisdiction as swaps.

Kalshi's growth trajectory adds urgency to this legal question. Annualizing its August volume of $11.4 billion produces a $137 billion figure that approaches the $166.9 billion handle reported by the entire U.S. sportsbook industry in 2025. This scale transformation, achieved primarily through sports and crypto contracts rather than traditional financial instruments, means Kalshi's regulatory classification now carries significant implications for both the prediction market and gambling industries.

The core legal tension

At the heart of the legal dispute lies the interpretation of what constitutes a legitimate swap contract under the Commodity Exchange Act. The Ninth Circuit's narrower reading requires a direct connection between the contract and the parties' actual financial exposures - a standard comfortably met by interest-rate decisions or inflation prints but difficult to apply to sports outcomes or bitcoin price movements. Kalshi's trading data reveals that the contracts satisfying this stricter definition represent a shrinking fraction of its business, while the contested categories drive nearly all growth.

This reality creates a fundamental tension between Kalshi's legal strategy and its commercial success. The exchange's viability increasingly depends on contracts that fit least comfortably within the swap framework, even as it argues for blanket classification of all offerings under that category. As the case potentially moves toward Supreme Court review, this disconnect between legal theory and market reality may prove decisive in determining whether prediction markets operate as financial instruments or face regulation as gambling products across multiple states.