Kalshi is investigating a cluster of trades that correctly anticipated President Donald Trump’s choice of Katie Zacharia as White House press secretary before news organizations reported the decision, raising fresh questions over how prediction markets police access to confidential political information.
Three wagers totaling about $173 were placed before reporting on Zacharia’s appointment began at roughly 2 p.m. ET on Friday, according to publicly visible trading data on Kalshi. If the market resolves as expected, the positions would return about $9,600 in combined payouts.
The trades were made while Zacharia’s implied probability of becoming press secretary stood near 1% in the days before the announcement. Trump confirmed her appointment later Friday in a Truth Social post, saying she would succeed Karoline Leavitt.
Kalshi’s public market displays do not identify traders, though the company holds customer identity information and has expanded compliance procedures for markets vulnerable to insider trading or manipulation. The review places the Zacharia contracts alongside a growing list of politically sensitive markets that have prompted scrutiny from regulators and lawmakers.
Trades were placed hours before reports emerged
The earliest wager was a $19 position placed at approximately 10:42 p.m. ET on Thursday. It is expected to pay $1,896 once the market closes.
Two larger positions followed shortly before public reporting began Friday. A trader placed about $74 at roughly 1:41 p.m. ET, in a wager projected to return $3,689. Another trade of about $80, placed around the same time, is expected to pay $4,023.
Prediction markets allow users to buy contracts tied to the outcome of a future event. A contract that resolves “yes” typically pays $1, while losing contracts expire worthless. Prices move between zero and $1, with the price commonly used as a rough indication of the market’s perceived odds.
A bet made when Zacharia’s chances were priced close to 1% would have offered an unusually large return if the appointment was known in advance. The timing of the three wagers, rather than their relatively modest upfront amounts, appears to be the focus of Kalshi’s inquiry.
Trump’s post described Zacharia as a senior communications adviser at Trump Media & Technology Group, the company that operates Truth Social. He also cited her prior work as a spokesperson and deputy assistant secretary for public affairs at the Department of Homeland Security.
Kalshi has faced previous enforcement cases
The inquiry arrives after several recent cases involving traders alleged to have used nonpublic information in Kalshi markets.
In August, the Commodity Futures Trading Commission reached a settlement with Gabriel Perez, a former White House teleprompter operator. The CFTC alleged that Perez traded Kalshi “mention markets” after reviewing prepared remarks before they were publicly delivered.
Perez agreed to repay $107,539 in profits and pay a $65,000 civil penalty, according to the CFTC settlement. The case showed how prediction contracts based on public appearances, speeches, and political events can become vulnerable when people involved in preparing those events trade on their outcomes.
Kalshi also permanently banned former Representative George Santos on Aug. 31 over trades connected to whether he would attend the State of the Union address. The platform fined Santos just over $71,000, according to the supplied account of the matter.
Santos had separately agreed in July to pay $35,000 to settle CFTC allegations relating to the same wager, without admitting or denying the regulator’s findings. Those cases centered on contracts where a trader’s personal access, employment, or direct participation could give them an advantage over the broader market.
The Zacharia market presents a similar compliance problem, though the identity and affiliation of the traders behind the three wagers have not been made public. A correct trade alone does not establish misconduct; political appointments can attract informed speculation from reporters, campaign figures, government contacts, or industry participants. The compressed timing and low pre-announcement odds give the trades an unusual profile.
Employer disclosures have become part of Kalshi’s controls
Kalshi began requiring some users in June to disclose their employers before trading in markets it considers particularly exposed to insider trading or manipulation. The requirement allows the company to compare a trader’s workplace against the subject of a contract and potentially restrict participation where a conflict is apparent.
At that point, Kalshi said it had made more than 20 referrals to law enforcement and opened more than 150 investigations during the first quarter. Those figures indicate that the company’s monitoring has moved beyond automated trading surveillance into reviews of the people and institutions connected to sensitive events.
Political markets are especially difficult to supervise because information about personnel decisions can circulate through small networks before an official statement. A press secretary appointment may involve White House staff, communications advisers, transition figures, media contacts, and executives at companies linked to the prospective appointee.
Kalshi’s review could test whether its newer employer-disclosure system can identify potential links between traders and people with access to the decision-making process. It could also lead to account restrictions, contract-related enforcement, or a referral to regulators if the company finds evidence that nonpublic information was used.
Congressional scrutiny extends to political contracts
House Oversight Committee Chair James Comer opened an inquiry in May into potential insider trading on Kalshi and Polymarket. Comer requested documents relating to customer identity checks and each platform’s systems for detecting irregular trading patterns.
The request reflected concern that anonymous public order books can obscure conflicts until after an event resolves. Platforms may know who placed a trade, but outside observers generally see only the price, timing, and size of a wager.
Neither the White House nor the CFTC responded before publication to requests for comment about the Zacharia wagers, according to prior reporting. Kalshi’s internal investigation now puts the focus on whether its private compliance records can explain trades that, from the public’s view, appeared to anticipate a major White House personnel announcement with striking precision.
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