Kalshi Built Another PR Website to Manage the Damage to Their Brand. FairPredicts Built Another Fact-Checker.

In February 2026, CEO Tarek Mansour appeared on CNBC and, when pressed to define insider trading in the context of prediction markets, acknowledged the "philosophical" difficulty of the problem and stated that some trading on little-known or nonpublic information was "totally fair game."2 That statement directly contradicted the policy Kalshi had told the public days earlier.

It was not a gaffe. It reflected the commercial reality that Kalshi's business model depends on informational advantages, and that aggressively prohibiting them would reduce trading volume and hurt their bottom line. Kalshi's CEO cannot simultaneously claim the platform bans insider trading and describe insider trading as totally fair game. He did both, in the same week, and the press caught it.6

On April 30, 2026, the Senate unanimously passed S.Res. 708, amending its standing rules to prohibit senators, officers, and staff from participating in prediction markets, effective immediately.4 The resolution came one week after three congressional candidates were caught trading on their own races.5

While its platform remained a documented vehicle for political self-dealing, Kalshi was running paid ads across Washington, D.C., on Metro cars, bus shelters, and in the Washington Post, declaring "We ban insider trading."6 That advertising campaign launched in March 2026, the same period Kalshi's own enforcement record was directly disproving the claim it was paying to broadcast to policymakers.

The cases Kalshi has actually disclosed reveal a compliance program that often waits for the public or press to find insider trading cases, then acts only after the damage is already visible, and imposes penalties too small to deter anyone.

In the MrBeast employee case, the conduct was flagged by outside media, not Kalshi.7 In the Kyle Langford case, Kalshi waited nine months to disclose the violation, and only after social media posts surfaced the conduct on their own.8 A Senate candidate bet on his own race specifically to test whether Kalshi would catch him, and told Wired he was not particularly impressed with the result.9 Former Congressman George Santos is now under active federal investigation for insider trading on Kalshi.10

Two hundred investigations are only meaningful if they result in meaningful accountability. The documented record shows they don't.

The House Oversight Committee launched a formal investigation into Kalshi in May 2026, specifically citing concerns about event contracts tied to war, military operations, and geopolitical conflict. The investigation is bipartisan, with members on both sides of the aisle raising alarm about what Kalshi is actually allowing users to bet on.

That congressional scrutiny was well-founded. In early 2026, Kalshi operated a market on "Ali Khamenei out as Supreme Leader?" A $54 million class action lawsuit was subsequently filed in the Southern District of New York, with traders alleging Kalshi used a buried "death carveout" to erase winning bets.12 Kalshi's D.C. ad campaign declaring "We don't do death markets" was still running on Metro cars and bus shelters while that lawsuit was being filed.

CNBC reported in June 2026 that the company has spent 2026 aggressively courting institutional adoption, completing its first-ever block trade with a Texas hedge fund and integrating with Clear Street, Interactive Brokers, and Tradeweb.13 Susquehanna International Group was onboarded as Kalshi's flagship institutional market maker in April 2024 and trades millions of dollars through the platform each week. Jump Trading acquired an equity stake in Kalshi in February 2026 in exchange for market-making rights.14

Per the Wall Street Journal, 67% of all profits on leading platforms go to just 0.1% of accounts, and fewer than 2,000 customers have combined to net nearly half a billion dollars.15 University of San Diego research confirms that retail users often pick the correct outcome and still lose money, because algorithmic firms get in earlier and capture the spread before a casual user can act.16

The market does not self-correct toward fairness. It self-corrects toward the institutions that were there before you opened the app. Kalshi's own spokesperson confirmed 2.9 users lose money for every 1 who wins. That is not an equal model. Kalshi admits there are more losers than winners.

Kalshi runs its own affiliated market maker, Kalshi Trading LLC, on the same exchange it operates. Per Kalshi's own regulatory filings, Kalshi Trading LLC was "established as a profit-making enterprise" to support liquidity through spread trading.17 Retail bettors lost $117 million on Kalshi parlays in just the first four months of 2026, with institutional oddsmakers and the exchange splitting the proceeds of a nearly 15% hold rate.18

Tarek Mansour has repeatedly insisted in interviews and advertising that Kalshi "isn't the house." When Kalshi says it "earns flat transaction fees," it omits that its own affiliated market maker is simultaneously capturing spread on the other side of your trade. Kalshi is the house. It built the house. It profits from the house. And then it runs ads telling you there is no house.

Kalshi ran TikTok ads featuring young people in casual settings framing the platform as effortless income, which a UCLA psychiatrist said would "never pass a regulated gambling operator's compliance review."19 It launched a formal college ambassador program targeting students at Yale, Harvard, Berkeley, and seven other campuses before deleting the page after public backlash.20 It recruited a 15-year-old as a paid affiliate.21

The Better Business Bureau's National Advertising Division (NAD) investigated its influencer campaigns for undisclosed advertising targeting young audiences.22 Median age is a single statistic. Kalshi's documented marketing strategy tells a different story about who it was trying to reach.