Kalshi's trading data reveals sports and crypto contracts dominate as legal battle over swap classification intensifies

A comprehensive analysis of Kalshi's trading records reveals the stark reality behind the legal battle over whether the prediction market's contracts qualify as swaps under federal law. The data shows that 95% of customer money staked in August went to contracts whose classification as swaps is actively contested in courts, while only 0.6% went to contracts that clearly meet traditional swap definitions. This imbalance provides crucial context as two federal appeals courts have reached opposite conclusions about jurisdiction, creating uncertainty about whether the CFTC or state gambling regulators oversee these markets.

The stark reality of Kalshi's trading composition

August trading data provides undeniable evidence of where Kalshi customers are actually placing their money. Single-game sports markets accounted for $5.6 billion or 49% of the $11.4 billion in total staked money that month. When including multi-leg combination bets and smaller league markets, sports-related contracts rose to 61% of total volume. The second largest category was short-dated crypto and commodity contracts at $3.9 billion (34%), with 15-minute bitcoin price prediction markets alone generating $2.7 billion. These price contracts resolve every quarter hour based on spot market references rather than discovering new prices, raising questions about their economic function.

In stark contrast, the contracts that clearly meet traditional swap definitions - interest rates, inflation, elections and index levels - attracted just $64.3 million or 0.6% of total volume. This microscopic share becomes more significant when considering that these are the only contracts where Kalshi's legal argument faces little opposition. The numbers reveal a fundamental disconnect between the exchange's legal positioning and its actual business operations.

The deepening legal divide between courts

The legal battle centers on competing interpretations of the Commodity Exchange Act's definition of swaps as contracts paying out on events 'associated with a potential financial, economic, or commercial consequence.' In April, a divided Third Circuit panel accepted Kalshi's broad interpretation, ruling that sports outcomes clearly affect economic interests of sponsors, advertisers, broadcasters and other stakeholders. The majority found this indirect association satisfied the statutory requirement.

However, on August 28, the Ninth Circuit established a much stricter standard in KalshiEX, LLC v. Assad. The court drew a clear line between an event and its outcome, requiring the economic consequences to be direct to the contracting parties rather than diffuse through the economy. The decision warned that Kalshi's interpretation could theoretically encompass 'bingo games, ping-pong tournaments' and found the contracts perform no genuine risk-transfer function since participants typically have no underlying exposure to the events. This direct challenge to Kalshi's business model creates a circuit split that may require Supreme Court resolution.

How volume reporting obscures reality

Kalshi's method of reporting trading volumes has created significant distortions in public understanding of its business. The exchange counts every contract at its full $1 face value regardless of actual trade price, making August volume appear as $40 billion. However, when calculated by multiplying each trade by its actual cleared price - averaging just 28.6 cents across all contracts - the real money at risk was $11.4 billion. This 3.5x inflation matters because it exaggerates the economic substance of trading activity.

The discrepancy becomes most dramatic for parlays, which appear as $17.8 billion (44% of volume) under Kalshi's method but actually represent just $1.1 billion (10%) of real money traded. Most combo contracts trade below 2 cents, meaning the face-value method inflates their apparent importance by roughly 16-fold. This reporting practice makes it difficult to assess the true composition and risks of Kalshi's markets without examining the underlying trade data.

The troubling decline in traditional swap activity

The trajectory of trading activity for undisputed swap contracts raises serious questions about Kalshi's core value proposition. While total exchange volume grew from $3.8 billion in January to $11.4 billion in August - a 200% increase - macro and political contract volume actually fell from $95.8 million to $64.3 million, representing a 33% decline. These contracts have never exceeded 2.5% of monthly volume, even during peak conditions like January's government funding fight and Federal Reserve chair nomination.

July provided particularly telling evidence when Kalshi's Fed decision market had its busiest month of the year at $21.2 million, yet macro and political contracts simultaneously hit their lowest share of exchange volume at just 0.45%. This inverse relationship suggests the exchange's growth comes entirely from sports and crypto speculation rather than traditional risk management functions that swap markets typically serve.

The mounting pressure for Supreme Court review

The split between federal appeals courts creates substantial regulatory uncertainty for the entire prediction market industry. 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 comments from this CFTC license applicant highlight how the outcome could reshape the regulatory landscape for all market participants.

The empirical trade data may prove pivotal in any high court review, as it demonstrates that the contracts most clearly qualifying as swaps represent a tiny and shrinking portion of actual business activity. This evidentiary record could undermine Kalshi's legal arguments by showing that its operations overwhelmingly involve products that courts have questioned as legitimate swaps under either interpretation of the law.

The regulatory implications of Kalshi's scale

With $11.4 billion in monthly volume - approaching the $13.5 billion monthly handle of U.S. legal sportsbooks - Kalshi has reached a size where its regulatory classification becomes a significant public policy issue. The exchange's annualized volume of approximately $137 billion would place it in the same league as the entire U.S. sports betting industry's $166.9 billion handle in 2025, despite only entering sports markets last year.

This rapid growth while primarily offering products that courts have questioned as legitimate swaps creates tension between financial innovation and gambling regulation. The fundamental policy question is whether prediction markets should be regulated as financial instruments under the CFTC or as gambling products under state oversight - a determination that could shape the industry's development for decades. As the legal battle continues, the trade data makes clear that Kalshi's future may hinge on courts accepting an expansive view of swaps that encompasses activities historically treated as gambling.