Kalshi Rolls Out Employment Screening for High-Risk Prediction Markets
Kalshi has introduced new requirements for certain users to disclose job details on markets the platform flags as high risk for insider trading. The prediction market operator says the move will help screen potential insiders and block sensitive trades before they happen. After eighteen years across iGaming and sportsbook operations this feels like a necessary evolution in how these platforms manage integrity at scale.
The screening process targets markets with elevated manipulation risk according to Kalshi’s own scoring. The firm previously relied on post-trade investigations to enforce its no-insider-trading rules. Now it is shifting to proactive measures that include employment verification.
Kalshi said in its official release “For markets with certain scores we will collect employment information and put in measures to screen potential insiders.”
This change arrives amid growing backlash against prediction markets. Allegations of insider trading have intensified in recent months. One high-profile example involved former US Senator George Santos who was accused of wagering on his own attendance at the State of the Union address.
From Reactive Probes to Preemptive Blocks
Kalshi launched what it called technological guardrails just months ago. Those protocols block politicians athletes and other relevant individuals from trading in specific politics and sports markets. The platform had leaned on investigations after the fact but its staff now use screening tools that have blocked more than 100 possible insider trades.
In the first quarter of 2026 Kalshi reported over 20 users to law enforcement agencies. It also launched more than 150 internal investigations. The firm will not release details on those probes because the cases remain active.
From the supplier side this kind of shift in enforcement is what operators price into their risk models faster than regulators can react. The data shows prediction markets are scaling quickly. Users have traded over $1.5 billion worth of contracts in the past seven days according to DeFiLlama.
Whistleblower Tools and League-Level Pressure
Kalshi added features that allow users to report abusive trading activity directly. It also introduced a new platform for whistleblower reports. These additions align with concerns raised by major sports organizations.
Last month the National Football League called on the Commodity Futures Trading Commission to ban prediction market contracts on sports events that are easily manipulable by a single person. The league pointed to bets on the nature of the first play in a football game as an example. A quarterback or head coach’s decision to pass or run can hinge on one individual and could be known in advance.
Other sports leagues have voiced similar worries. The regulator has responded by speaking to all the professional sports leagues about preventing insider trading. Kalshi‘s language reflects some of these issues. It highlighted higher risk in markets that turn on a decision by a single individual or opaque group with broad discretion.
The operator will apply a new risk scoring method to its listing criteria. Kalshi said “Less important markets that carry high insider or manipulation risk scores may be rejected from listing.”
The Risk of Overreach and Market Friction
Any compliance layer carries trade-offs. Requiring job disclosures on select markets could deter legitimate participants who prefer anonymity. Prediction markets thrive on broad liquidity. If the screening process feels too intrusive it risks reducing participation in exactly the contracts that need the most volume to function cleanly.
There is also the question of consistency. Kalshi judges which markets carry heightened risk. That discretion invites second-guessing especially when high-volume contracts sit at the center of political or sports events. The platform has already blocked more than 100 potential insider trades through its tools yet the volume figures suggest the overall market keeps expanding.
Scrutiny is mounting beyond the United States as well. In South Korea lawyers issued a warning after a Polymarket user won $160,000 backing an underdog candidate in the June 3 Seoul mayoral election. These incidents feed a narrative that prediction markets remain vulnerable to information advantages that traditional sportsbooks have spent years trying to neutralize.
In my experience across European regulated markets operators adapt their compliance overhead quickly once the regulatory gaze intensifies. The same pattern appears to be playing out here.
The Bottom Line
Kalshi is moving from post-trade policing to upfront verification and risk-based listing decisions. The combination of employment screening whistleblower channels and explicit risk scoring shows a platform trying to get ahead of both league complaints and enforcement pressure. Whether this materially reduces insider activity or simply shifts it to less-scrutinized venues remains the open question industry executives should track.
Prediction markets and sportsbooks increasingly price the same outcomes yet they operate under different integrity playbooks. For operators and partners watching the space the real test will be how these controls scale with the $1.5 billion weekly volumes already on the board. Those who integrate or advise on these platforms would do well to study how the friction introduced today affects liquidity tomorrow. For deeper insight into related operational considerations see our advisory services at https://sccgmanagement.com/our-services/.
