WASHINGTON — House Oversight Chairman Rep. James Comer has requested records from Crypto.com, Hyperliquid, and PredictIt regarding user verification systems and detection of trades potentially involving nonpublic information. The letters, sent Sept. 29, expand a congressional insider-trading investigation that began in May.

The committee specifically asked for details on the tools each platform uses to flag trades potentially involving nonpublic information and a list of all referrals made to regulators or law enforcement over the past two and a half years.

This expanded inquiry builds on an investigation Comer initiated in May that involved records requests to prediction-market platforms Kalshi and Polymarket. The committee has since received nearly 1,000 documents from those platforms, and representatives have provided multiple briefings.

The letter to Hyperliquid referenced reports of a large leveraged short position placed before a major U.S. tariff announcement in October 2025. The committee alleges this position coincided with nonpublic information, though no regulator has made a finding regarding the trade.

Comer asked Crypto.com whether employees of any of its affiliates traded on contracts tied to corporate decisions they knew about before public disclosure, including token listings or custody arrangements. The committee also sought records on any government officials who may have traded on contracts linked to crypto regulation or Crypto.com's own regulatory status.

For PredictIt, owned by Aristotle Exchange, the committee sought information on trades tied to elections, nominations, and other government actions involving both current and former officials.

Comer said in the announcement that bad actors have exploited online prediction platforms to make thousands of dollars by placing bets based on nonpublic information as these platforms grow. The stated aim of the investigation is to assess the prevalence of insider trading across these platforms and potentially guide legislation that would bar government officials from trading on prediction markets.

The three companies did not respond to requests for comment.