Kalshi Just Rolled Out Its Most Aggressive Insider Trading Controls Yet
Key Facts
- Kalshi will require employment information before some users can trade in markets it deems higher risk for insider trading or manipulation.
- The company says its new screening tools have already blocked more than 100 potential insider trades and that it made more than 20 law-enforcement referrals in Q1.
- This update follows congressional scrutiny of Kalshi and Polymarket over identity verification, geographic controls, and suspicious trading activity.
Kalshi Adds Employer Checks as Insider Trading Scrutiny Builds
Kalshi announced that it will begin collecting employment information from users before allowing them to trade in certain markets with heightened insider trading or manipulation risk.
The update includes three main pieces: market risk scoring, employment verification, and new whistleblower reporting features built into the platform.
The company said each proposed market will now be assessed for risk factors including corporate events, outcome concentration, market importance, regulatory risk, non-traditional insider risk, and national security risk. Markets with certain scores will trigger employment checks before trading is allowed.
“By implementing these new integrity measures, we continue to lead the industry on the issue of market integrity amongst federally regulated prediction markets,” Kalshi Head of Enforcement Robert DeNault said in the company announcement.
What Users May Have To Disclose
For markets Kalshi classifies as higher risk, users may be asked to provide employment information before participating. The company said the goal is to identify “presumptive insiders” - people who may have material, non-public information about a market’s outcome - and block them before a trade is placed.
That is a meaningful shift for a platform whose product sits between retail speculation, financial market structure, and betting-style event trading. With this move, Kalshi is no longer simply reacting to suspicious activity after the fact - it is trying to decide, before a trade happens, whether a trader’s job creates an unacceptable conflict.
This policy does not require every Kalshi user to disclose employer details for every market, however. The added screening applies only to markets that receive certain risk scores.
This means that most markets may feel unchanged, while markets involving companies, government decisions, opaque committees, foreign policy, or sensitive institutional information may face more aggressive gatekeeping.
Why Kalshi Is Moving Now
Kalshi’s announcement follows a series of concerns about insider trading on prediction-market platforms. The House Oversight Committee opened an investigation in May into Polymarket and Kalshi, requesting information on identity verification, geographic restrictions, and suspicious trading monitoring. Chairman James Comer said the committee was examining whether users were using nonpublic information to engage in insider trading.
The committee also cited concerns around suspiciously timed wagers on Polymarket and an April 2026 federal indictment alleging that U.S. Army Master Sergeant Gannon Ken Van Dyke used classified information tied to a military operation to generate more than $409,000 in profits.
Kalshi has also been building out its compliance infrastructure for months. In February, the company announced an independent Surveillance Advisory Committee, surveillance partnerships with Solidus Labs and the Wharton Forensic Analytics Lab, and DeNault’s appointment as head of enforcement. Kalshi said at the time that it runs KYC and AML checks on every user before trading and publicly reports trades to the CFTC daily.
In its latest update, Kalshi disclosed Q1 enforcement statistics: more than 150 investigations, more than 100 potential insider trades blocked by new screening tools, more than 20 referrals to law enforcement, and five Kalshi disciplinary actions.
Why This Matters For Bettors
For bettors, the first impact is practical: some event markets may become harder to access, slower to trade, or unavailable to users whose employment creates a conflict. That may be frustrating for casual traders who see prediction markets as a fast-moving alternative to sportsbooks, but it is also the cost of bringing sensitive real-world event markets into a regulated environment.
The bigger bettor-facing issue is market trust. Prediction markets depend on the idea that prices reflect public information, trader judgment, and market consensus. If users believe insiders can freely trade on confidential information, the product starts to look less like a market and more like a trap for uninformed money.
That perception is especially dangerous in markets tied to politics, corporate announcements, government action, military developments, or sports personnel decisions.
There is also a pricing angle. Stronger insider controls may reduce some sharp early movement caused by privileged information, which could make markets feel fairer for ordinary users. But added restrictions can also reduce liquidity if traders refuse to comply with the employer check in order to trade in these markets.
For the broader industry, Kalshi is trying to set the compliance standard before regulators set it for everyone. If regulators view employer verification and risk scoring as credible safeguards, Kalshi can argue that prediction markets can handle sensitive event contracts without banning the category outright.
What Happens Next
The immediate question is how aggressively Kalshi applies the scoring model. If employment verification is limited to a narrow set of obvious high-risk markets, the user experience may not change much.
If the model expands across politics, corporate events, macroeconomic releases, sports-adjacent markets, or foreign-policy contracts, users will notice more compliance friction.
Regulators and lawmakers will be watching whether Kalshi’s system produces measurable results. The company has already pointed to blocked trades, investigations, referrals, and disciplinary actions. The next test is whether those numbers translate into confidence from the CFTC, Congress, and state-level critics of prediction markets.
Market behavior may also shift. Traders with professional proximity to sensitive outcomes may avoid certain markets entirely. Other users may become more willing to report suspicious activity if whistleblower tools are easy to use. Market makers and high-volume traders will likely pay close attention to whether risk-scored markets show lower liquidity or wider spreads.
Marcus has spent over 20 years navigating the legal side of online betting - from his early days consulting for offshore operators to helping licensed U.S. sportsbooks launch in regulated markets. He’s worked with compliance teams, reviewed licensing frameworks in 15+ states, and advised on some of the biggest regulatory shifts since PASPA was repealed.
At BettingScanner, Marcus serves as the voice of reason - translating legalese into plain English and helping bettors understand what’s legal, what’s risky, and where the gray areas live. If you’re ever unsure about the rules, Marcus is your man - as he probably helped write them.
