Month-to-month buying and selling quantity on the Polymarket prediction market fell by about 8.9% in April, the primary decline in month-to-month exercise since August as rivals like Kalshi elevated their market share.
Polymarket and its US-based buying and selling utility collectively generated greater than $10.2 billion in quantity in April, in comparison with greater than $11.2 billion in March, based on information from Dune Analytics.
Nevertheless, rival Kalshi’s April buying and selling quantity surged by about 13%, climbing to about $14.8 billion, Dune information reveals.
The full month-to-month buying and selling quantity for prediction markets additionally elevated to about $29.8 billion in April from about $26.5 billion in March, a rise of about 12.4%.

Month-to-month quantity figures for prediction markets. Supply: Dune
Polymarket’s quantity drop got here as the corporate makes an attempt to completely combine US markets once more, amid elevated authorized and regulatory scrutiny of prediction markets by US lawmakers after the sector skilled a meteoric progress through the 2024 elections.
To make certain, prediction markets are proving to be enticing to a slew of latest rivals.
Prophet, an AI-native prediction market platform, final week launched its first dwell buying and selling tranche, introducing a system the place an AI mannequin acts because the counterparty utilizing actual capital. Earlier this week, monetary know-how firm MoonPay debuted an AI know-how device for buying and selling methods on prediction markets.
Associated: Dutch customers nonetheless entry prediction markets regardless of Polymarket ban
Polymarket eyes US growth as prediction markets come below hearth
Polymarket is looking for to broaden its presence within the US after exiting in 2022 as a part of a settlement with the US Commodity Futures Buying and selling Fee (CFTC), which barred the platform from permitting US residents on its important, international alternate.
In a bid to regain a foothold, the corporate launched a devoted app for US prospects in December 2025, albeit a platform that’s siloed off from the Polymarket’s international platform and its liquidity.
A number of US lawmakers and regulatory officers have raised issues about insider buying and selling on prediction markets, significantly in markets associated to warfare, power costs, and different geopolitically delicate points.

A letter from Senator Elizabeth Warren and different US lawmakers asks the CFTC to crack down on insider buying and selling. Supply: Senator Elizabeth Warren
In March, Senator Elizabeth Warren and greater than 40 Congressional representatives wrote to the CFTC demanding a ban on authorities insiders utilizing prediction market platforms to revenue whereas in workplace or serving in an official capability.
“The CFTC maintains that occasion contracts are a kind of swap topic to its jurisdiction, and, due to this fact, it ought to be certain that federal workers perceive current restrictions on prediction market insider buying and selling,” the lawmakers stated.
Wisconsin Legal professional Normal Josh Kaul additionally filed lawsuits towards Kalshi, Polymarket, and different prediction markets in April, accusing the platforms of violating state sports activities betting legal guidelines.
Journal: Ought to customers be allowed to guess on warfare and dying in prediction markets?
