Kalshi, the CFTC and event contracts: the retail risks

Kalshi chief executive Tarek Mansour told a Washington fintech conference this week that the fight over prediction markets is about whether they stay in the U.S. at all, according to Unchained. His remarks came days after the CFTC proposed treating event contracts as swaps. This article looks at how these contracts work and where a retail trader can lose money while the rules are still being written.

What happened

Unchained reported that Mansour made the comments on Wednesday at DC Fintech Week, held in Arlington, Virginia. His core point was that the legal battle is not really about state versus federal oversight. "It’s not a choice of state versus federal market. It’s a choice of whether prediction markets exist in the U.S. or whether they go offshore", he said.

The backdrop is a pair of CFTC moves on Oct. 9. One proposed rule would put event contracts in the swap category by name, covering outcomes in sports, politics, culture and weather. A separate interim final rule carves out sportsbook bets and casino games, so those are not swaps. The agency's chairman, Michael S. Selig, said such contracts are commodity derivatives under the agency's exclusive jurisdiction.

The courts have not settled the question. Federal appeals courts disagree. Kalshi won one major decision, while the states won two. New Jersey has asked the Supreme Court to step in, and the NFL filed a brief backing the state. Each rule opens a 30-day window for public comment once it is printed in the Federal Register.

The mechanics: a yes-or-no contract

An event contract is a bet on a single question with a yes or no answer. Will a person attend a speech? Will a word be said? If the answer turns out yes, the yes side receives a fixed payout. If not, it receives nothing. The price you pay reflects how likely the market thinks the outcome is.

That structure has one helpful feature. Your maximum loss on a bought contract is what you paid for it. There is no margin call in the usual sense. But the loss is binary. A stock that disappoints might fall a little. A contract that resolves the wrong way goes to zero, all at once, at a known time.

Calling these contracts swaps matters because swaps are a regulated derivatives category. In plain terms, the CFTC is saying the federal derivatives rulebook applies, rather than state gambling law. For a trader, the label decides who writes the rules on disclosures, fair dealing and market surveillance, and who you can complain to when something goes wrong.

Insiders sit on the other side

Every event contract has a counterparty. When you buy yes, someone else holds no. If that person already knows the answer, you are not trading against a forecast. You are trading against a fact.

Two cases show this is not theoretical. The CFTC found that former Rep. George Santos traded a contract on his own State of the Union attendance, an outcome he controlled, and that he posted misleading claims about his plans. His settlement: $17,569.98 in disgorgement, a $17,500 civil penalty and a three-year ban from trading. In another case, former White House teleprompter operator Gabriel Perez traded contracts on words the president would mention, using speech text he had seen early. His settlement topped $172,000 once disgorgement and penalties were combined, plus a three-year ban.

Mansour said the open, visible nature of these markets cuts both ways: it also makes misconduct easier to spot. He said Kalshi received 100 whistleblower complaints within minutes in the Santos episode. Kalshi and Polymarket have both added insider-trading controls. Still, enforcement comes after the trade. The money a retail trader lost on the other side was lost when the contract settled.

Where the risk is

Prediction markets look simple. The ways to lose are less obvious.

• Information gaps: on questions that one person can control or see early, the best-informed trader may be your counterparty.
• All-or-nothing settlement: a contract that resolves against you is worth nothing, with no partial recovery.
• Legal limbo: with appeals courts split and a Supreme Court petition pending, access or product terms in your state could change.
• Offshore platforms: venues outside U.S. oversight may offer no regulator to complain to and weaker protection for your deposit.

Volume claims are another thing to read carefully. Critics on X alleged that Kalshi's BTC and ETH perpetual-futures volume was overstated. Mansour denied it, saying repeated trade sizes come from market makers using fixed order sizes. Whatever the answer in that case, headline volume is not the same as the depth available to you when you want to exit.

What to watch

The next steps are procedural but important. Watch for the two CFTC rules to appear in the Federal Register, which starts the 30-day comment clock. Watch whether the Supreme Court takes up New Jersey's petition. And watch how platforms describe their insider-trading controls in practice, not just in announcements.

If you trade these contracts, check who regulates the venue, how a contract settles, and what happens to your funds if the platform stops serving your state.

Sources

• Unchained, 15 Oct 2026

Drafted with an AI model using only the sources listed, and released automatically after software checks on figures and originality. Nobody edited it by hand. For learning only; it does not tell you what to buy or sell.