US lawmakers have introduced a second bill this week aimed at curbing prediction market insider trading by government officials, amid growing concerns over such activity on major platforms such as Kalshi and Polymarket.
In an announcement on Thursday, US lawmakers Todd Young, Elissa Slotkin, John Curtis and Adam Schiff unveiled the bipartisan Public Integrity in Financial Prediction Markets Act of 2026.
“No one should be profiting off the information and knowledge gained as a public servant, period,” Slotkin said, adding: “This bill is an important first step in placing common sense rules around prediction markets, and it has real teeth to ensure those who break these rules face real consequences.”
The bill underscores growing unease that prediction markets could become a new frontier for insider trading, as bets tied to real-world events blur the line between wagering and financial activity.
Bill aims to stop insider profiteering
The latest bill, which has been introduced in the second session of the 119th Congress, aims to prohibit government executives from using “insider information to bet on a prediction market contract.”
If enacted, the Public Integrity in Financial Prediction Markets Act of 2026 would cover the president, vice president and politicians across Congress, the House of Representatives and the Senate.
It would also cover political appointees and “employees of an Executive agency or independent regulatory agency.”
The bill defines insider information as anything that a “reasonable investor would consider important in making a decision related to a prediction market contract and is not publicly available.”
It also outlines reporting requirements under which a government official must report any contract wagers over $250 within 30 days to the supervising ethics office. The individual must include “the number of contracts purchased, price of contract, date and time of transaction, name of contract, position taken on contract, name of trading platform used, profit or loss made on transaction.”
The penalties will see individuals charged the greater of $500 or double the amount of profit made from the prediction market contract.
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The bills come amid an increasing number of state and federal lawmakers taking aim at prediction markets.
It also marks the second bill introduced this week to try to stop government officials from using insider information to profit on prediction markets, the first being the PREDICT Act introduced by US Representative Adrian Smith and Representative Nikki Budzinski on Tuesday.
However, the PREDICT Act focuses on preventing insider trading on prediction markets relating to political events, policy decisions and other government actions.
Recently, both Kalshi and Polymarket have made attempts to tighten their rules to stop insiders wagering on their platforms.
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