Kalshi Rejects Wash-Trading Speculation

Prediction-market operator Kalshi says it is not under investigation by the Commodity Futures Trading Commission (CFTC), pushing back against days of scrutiny over unusual order patterns in its Ethereum (ETH) perpetual futures market. In a statement, company spokesperson Elisabeth Diana said Kalshi has received no contact from the regulator and does not believe a formal examination has been opened. "We have not been contacted by the CFTC and don't believe there is any formal examination," she said, adding that the patterns "are typical of liquidity incentive programs and common in financial markets."

The dispute centers on strikingly uniform order sizes in Kalshi's crypto perpetuals. Data pulled from the platform's public API shows the bulk of volume across its Bitcoin derivatives and ETH perp markets came from identically sized trades, with many ether orders clustered at exactly $5,500 and bitcoin perp orders at $2,500 or $5,000. Researcher Beni, co-founder of analysis firm Stealth Neolab, flagged the imbalance early: Kalshi's ether perpetual recorded roughly $539 million in 24-hour volume against just $3.1 million in open interest — the measure of contracts still open rather than settled — a multiple far above what established derivatives venues sustain. His later analysis found that $5,500 trades represented 48% to 58% of notional volume on four separate days in September, a pattern examined in Kalshi's Ethereum (ETH) Perp Volume Shows 57% in Repeating $5,499 Orders.

Diana attributed the activity to Kalshi's liquidity incentive program, which rewards participants for keeping orders resting on the book, and noted that the company transmits its trading data to the CFTC daily. She said the platform maintains "tons of tools" and a full surveillance team against wash trading — transactions that create the appearance of market activity without a genuine change in economic exposure — and dismissed viral speculation as "rumors seeded by competitors." Unlike on-chain prediction venues, where a smart contract executes every match transparently, Kalshi operates a centralized order book, which limits how much outsiders can independently verify from the data it publishes.

CFTC Weighs Enforcement Decision

According to the Wall Street Journal, the CFTC has been examining Kalshi's trading data after nearly one million trades were placed in a single ether market since August. More than a third of recent trades were concentrated at around $5,500, and volume over the past month exceeded $5 billion. The regulator was reviewing the figures before deciding whether to open a formal enforcement investigation; it declined to confirm whether one is already underway.

The scrutiny lands weeks after a regulatory milestone: on May 29, the CFTC approved Kalshi's listing of bitcoin perpetual futures — the first such approval in the United States, as set out in an official CFTC press release. The company then rolled out perpetuals on ETH and other crypto assets, expanding beyond event contracts. Perpetual futures carry no expiry date and let traders take price exposure without owning the underlying asset, a structure distinct from the spot crypto ETF products that dominate regulated ETH exposure. The timeline also puts the CFTC in a dual role in a market it opened only months ago: the same agency that green-lit Kalshi's products is now reviewing whether the venue's volume reflects real trading. The Journal also reported that some large participants receive fee waivers and equity-acquisition opportunities conditional on hitting volume targets, layered on top of monthly payments to market makers who quote continuously.

Kalshi published a blog post on September 22 denying wash-trading intent, arguing the patterns stem from its liquidity program. Independent verification remains difficult: the platform's public data does not identify participants, and the account counts and participant relationships the company describes cannot be externally checked. The CFTC had already signaled its posture in a February 25 advisory on prediction markets, warning that pre-arranged trades and wash sales may violate the Commodity Exchange Act — the same rulebook that governs Kalshi's CFTC-supervised venue.

What the Fee-Rebate Filing Says

The most load-bearing document in the dispute is Kalshi's own fee-rebate filing with the CFTC, which expressly excludes suspicious self-trading, wash trades and pre-arranged transactions from rebate eligibility. Yet $5,500 clustering predates the September change to that program, so the exclusion alone cannot explain the pattern. With participant identities unverifiable from public data — and ETH open interest on Binance recently hitting a nine-month high of $6.58 billion, previously reported — leverage around Ethereum (ETH) has become a regulatory-grade topic.

The burden now falls to the CFTC to determine whether Kalshi's incentive-driven volume reflects genuine liquidity provision or manufactured activity. The markers to watch from here are procedural: whether the agency opens the formal enforcement docket it has so far declined to confirm, whether Kalshi's liquidity program changes again after the September fee-rebate revision, and whether the platform ever publishes data granular enough for outsiders to verify the participant relationships it describes. Until then, the Ethereum derivatives market is left weighing the company's assurances against figures it cannot independently audit.