NEW YORK — A trader who wants to bet on whether a chief executive survives the quarter will now have to tell Kalshi who signs their paycheck first.
The prediction exchange on Tuesday rolled out three measures it says take effect immediately: a risk-scoring framework for every market it lists, employment verification for traders in contracts judged prone to insider activity, and whistleblower tools on every market feeding a surveillance desk it says is staffed around the clock, the company said in its announcement. The changes follow a call from the exchange’s advisory committee for stronger defenses against insider trading, CNBC reported.
The urgency is in Kalshi’s own enforcement ledger. For the first quarter, the company says it ran more than 150 confidential investigations, blocked more than 100 potential insider trades with its new screening, made more than 20 referrals to law enforcement, and took five disciplinary actions. Those are the exchange’s own figures, not an external auditor’s. A federally regulated venue producing them in a single quarter is not hypothesizing an insider problem. It is describing one.
The mechanics matter because of what they admit. Kalshi will score markets on six factors, including corporate KPI risk, concentration of possible outcomes, regulatory compatibility, what it calls non-traditional insider risk, and national security exposure. A market that scores high enough can be refused listing altogether. Where a market clears listing but stays risky, contracts tied to corporate performance, national security and major geopolitical events among them, traders must hand over employment details so the exchange can identify what it calls presumptive insiders before a trade executes rather than after.
Robert DeNault, Kalshi’s head of enforcement, said the company intends to keep leading the industry on market integrity, a sentence that does double duty as a boast and as a quiet comment on everyone else in the business.
The industry’s problem stopped being theoretical weeks ago. In May, federal prosecutors charged a Google engineer who pocketed $1.2 million on Polymarket, allegedly by trading on confidential internal search data under an alias. Different platform, same mechanics: event contracts convert workplace knowledge into a tradable edge, and the people best positioned to know an outcome are exactly the people most tempted to bet on it.
Washington has noticed. Lawmakers have been weighing sweeping action against prediction markets since the spring, with critics describing the contracts as a gambling loophole that exposes the political system to manipulation. Read against that backdrop, Tuesday’s rollout is pre-emption as much as protection. Kalshi is building the case that the house can police its own tables before someone in Congress decides it cannot.
The stakes keep growing because the markets keep mattering. When Representative Nancy Mace lost Donald Trump’s endorsement in the South Carolina governor’s race this month, prediction markets had already written her off days before the primary. Venues that shape political narratives in real time are venues where an inside edge is worth real money, and not only on election nights.
What the new defenses cannot do is also worth stating plainly. Employment verification relies on what traders disclose, and a determined insider can lie, or trade through a relative’s account. The risk scores come from Kalshi’s own algorithm, reviewed by a Surveillance Audit Committee that Kalshi itself appointed and that will report quarterly to the company it audits. None of the measures announced Tuesday involve an outside auditor, and the Commodity Futures Trading Commission, which regulates the exchange, has not said publicly whether it considers self-policing at this scale sufficient.
That silence is the open question hanging over the whole exercise. The first quarterly report from the audit committee will land sometime in the fall, and it will be read two ways no matter what it says. Blocked trades are proof the screens work. They are also a running count of how many people keep walking up to the tables with marked cards.
