Today in prediction market news, we’re tracking the biggest developments across the industry in real time, from fresh lawsuits and insider trading allegations to regulatory battles, market-moving legislation, and other major stories shaping prediction markets, sports event trading, and regulated forecasting platforms. Follow our live blog throughout the day for breaking updates, market reactions, and analysis from across the prediction markets, crypto, and iGaming sectors.
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Key moments
- 11:57 am New York cites Polymarket loss in Kalshi fight
- 11:55 am CFTC challenges Illinois prediction market fee
- 11:48 am CME prepares CFTC lawsuit over perpetual futures
- 11:47 am Kentucky expands legal fight against prediction markets
Robinhood hit with new California class-action lawsuit
12:02 pm
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And the legal pressure on prediction markets keeps building. Another class-action lawsuit was filed in California alleging Robinhood’s sports event contracts amount to illegal gambling and mislead consumers. The complaint targets both Robinhood Markets and Robinhood Derivatives, adding another legal challenge as regulators and courts continue scrutinizing event-based trading products.
NEW: Another class-action lawsuit filed in California alleges Robinhood’s sports event contracts amount to illegal gambling and mislead consumers @RWW pic.twitter.com/xWb6PogEhQ
— Suswati Basu (@suswatibasu) June 17, 2026
Robinhood suffers similar court setback
12:00 pm
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It wasn’t just Polymarket. A Michigan federal judge also denied Robinhood Derivatives’ request for a preliminary injunction, handing states another early legal win in the fight over prediction markets. With both motions rejected, attention now turns to upcoming rulings that could further shape the industry’s regulatory future.
Robinhood’s motion for preliminary injunction was also denied by Michigan federal judge Paul Maloney, who earlier today denied Polymarket’s PI motion. The two opinions are virtually identical. The same judge will also be deciding Michigan’s motion to remand vs. Kalshi. pic.twitter.com/BqKqVAEbLj
— Daniel Wallach (@WALLACHLEGAL) June 18, 2026
New York cites Polymarket loss in Kalshi fight
11:57 am
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New York is adding fresh ammunition to its case against Kalshi. State attorneys have filed a recent Michigan federal court decision that denied Polymarket’s request for a preliminary injunction, arguing the ruling supports New York’s position.
CFTC challenges Illinois prediction market fee
11:55 am
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The fight between regulators and states is escalating. The CFTC has amended its lawsuit against Illinois, challenging a new law that would impose transaction fees on sports-event prediction contracts. The agency is also seeking a preliminary injunction, arguing the measure interferes with federally regulated prediction markets and designated contract markets.
CFTC amends lawsuit vs. Illinois to challenge new state law requiring prediction markets to pay a transaction fee to Illinois ranging from 1.75% to 3.5% of the value of each sports-event contract, and files a motion for preliminary injunction to block implementation of new law. pic.twitter.com/8CrjiqqgNg
— Daniel Wallach (@WALLACHLEGAL) June 18, 2026
Betr COO turns Kalshi into a slot machine
11:53 am
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What happens when prediction markets meet casino mechanics? Betr COO Alex Ursa showed off a slot-machine-style interface built on top of Kalshi’s APIs, complete with adjustable volatility and automated contract selection. The demo sparked fresh debate over whether prediction markets are evolving into something that looks increasingly like traditional gambling.
Complaint alleges market manipulation on Kalshi
11:51 am
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Questions are swirling after a complaint alleged potential insider trading and market manipulation related to Indiana’s GOP Secretary of State contest. The claims have not been proven, and those named have not been found liable for any wrongdoing. Kalshi says it is reviewing the allegations.
🚨 Hoosier Breaking News: Kalshi Investigating Sen. Jim Banks and Indiana House Rep. Andrew Ireland for Alleged Insider Trading on Secretary of State Race
Kalshi has confirmed to the Hoosier Enquirer that it is investigating U.S. Senator Jim Banks and Indiana State… pic.twitter.com/oY1dCE14de
— Hoosier Enquirer (@HoosierEnquirer) June 17, 2026
CME prepares CFTC lawsuit over perpetual futures
11:48 am
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CME Group is reportedly gearing up to sue the CFTC over its approval of perpetual futures contracts, with legal action potentially coming as soon as tomorrow. Outgoing CEO Terry Duffy says the regulator has misinterpreted futures law.
#NEW @CMEGroup to sue CFTC over the approval of perpetual futures as soon as tomorrow.
Outgoing CEO Terry Duffy speaks to Fast Money exclusively on the lawsuit and his decision to retire. https://t.co/g6Kjz4c5bC
— CNBC’s Fast Money (@CNBCFastMoney) June 17, 2026
Kentucky expands legal fight against prediction markets
11:47 am
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Welcome to today’s live blog. Kentucky is turning up the heat on prediction markets. The state is now involved in legal battles with VGW, Kalshi, and Polymarket, arguing their offerings violate state gambling laws. The lawsuits add to growing regulatory pressure on the industry as questions around oversight, taxation, and market integrity continue to mount.
