Kalshi recorded as many as 400 suspicious trades since the beginning of the year, according to a report citing a media investigation. The report describes continuing scrutiny of possible insider trading on prediction market platforms and says platforms have introduced safeguards; it does not specify the year covered by the figure.
The reported cases may prompt closer scrutiny of trading controls on prediction market platforms.
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Gabriel Perez, who previously operated White House teleprompters, settled CFTC charges concerning prediction market trading. The regulator alleged that he traded using confidential information about presidential speeches. Settlement terms require Perez to return $107,539.02, pay a civil penalty of $65,000 and stop trading for three years.
Coinbase announced on 16 June that it was adding multi-event combinations and interval-based crypto trades to its prediction market offering in the US. The company said customers could trade predictions over intervals from 15 minutes to annual periods, including on Bitcoin, Ether and Solana.
The House Committee on Oversight and Government Reform requested internal records from Kalshi and Polymarket as it investigates trading based on non-public information. Chairman James Comer said the inquiry will examine identity checks, geographic restrictions and detection of suspicious trading; the committee is also assessing safeguards against insider trading.
Hyperliquid’s HIP-4 prediction market processed $317m in transactions following its 2 May 2026 launch, citing ChainCatcher analysis. The analysis put September volume at about $51m and daily volume in early October at roughly $1.25m, below Kalshi and Polymarket.
Hyperliquid's HIP-4 prediction market product has processed $317m in transaction volume since its launch on 2 May 2026, according to an analysis by Mario Chow published by ChainCatcher. The analysis said HIP-4 remains far behind Kalshi and Polymarket in scale.
The CFTC said on 5 November that registered designated contract markets must remove domestic geographic restrictions that conflict with its fair-access requirements within 30 days. Exchanges must also ensure partner intermediaries comply, or explain in writing why they cannot; the guidance comes amid state court orders requiring restrictions in several states.
The CFTC said on 5 November that registered prediction market operators must unblock geoblocked states within 30 days. Under its new interpretative guidance, designated contract markets that cannot comply may instead explain in writing why they cannot.