Polymarket | Crypto

Polymarket was banned in the Netherlands in February, but Kalshi, Hyperliquid and Interactive Brokers are still offering prediction markets to Dutch users. Dutch users can still access crypto prediction markets despite a previous ban on market leader Polymarket. Polymarket was banned by the Dutch Gaming Authority (Ksa) in February for operating without a gambling license. However, US-based Kalshi, crypto exchange Hyperliquid and investment giant Interactive Brokers are still offering prediction markets to Dutch users, according to an investigation by Dutch financial newspaper FD. The Ksa warned that Polymarket’s ban applies to similar platforms. “Websites similar to Polymarket also fall under our supervision and can therefore be sanctioned by us,” a spokesperson reportedly said. Read more

Polymarket has selected Chainalysis to flag suspicious trades as insider betting concerns mount and regulators tighten scrutiny on prediction markets. Prediction market platform Polymarket is rolling out new monitoring and detection tools following backlash over alleged insider-informed betting activity, partnering with blockchain analytics company Chainalysis to strengthen oversight. Polymarket said Thursday it selected Chainalysis to provide an onchain market integrity solution aimed at monitoring trading activity and enforcing platform rules. The detection model is “designed to surface patterns consistent with insider knowledge in prediction markets,” the company said. Read more

By partnering with Chainalysis to monitor its blockchain data in real-time, Polymarket is signaling to both users and regulators that it is serious about eliminating insider trading and market manipulation.

Hyperliquid is gearing up to challenge Polymarket with a zero-fee entry for event betting as the $63 billion prediction market sector continues to explode.

Polymarket is reportedly in talks with the CFTC to restore US access after its 2022 settlement, following a limited US rollout in December 2025 focused on sports contracts. Polymarket is seeking regulatory approval to reopen its main prediction markets platform to US users, Bloomberg reported Tuesday, citing people familiar with the matter. According to Bloomberg, Polymarket has been engaging with the US Commodity Futures Trading Commission (CFTC) to lift the prohibition on US-based customers. The move would mark a broader US return for the company, which re-entered the market in a limited form last year through its regulated QCEX-based setup but still keeps Americans off its main international exchange. Read more

The apparent hacker claimed to have breached other prediction markets and planned to release the data in the next few days. Prediction markets platform Polymarket has denied recent reports that its customer data was breached after a hacker on the dark web posted what the person claimed was a trove of private user details. Cybersecurity company Vecert Analyzer and several other X accounts that track dark web activity shared screenshots from DarkForums on Tuesday showing a hacker using the pseudonym “xorcat” claiming to have breached Polymarket. In the post, xorcat said they had stolen over 300,000 records, including 10,000 unique user profiles with full names, profile images, proxy wallets and base addresses.  Read more

If approved, the move would help Polymarket compete with Kalshi in the U.S., and bring more event-trading activity under CFTC regulatory oversight.

Brazil has blocked 27 prediction market platforms, including Kalshi and Polymarket, as new rules classify many contracts as gambling. Brazilian authorities have moved to shut down 27 prediction market platforms, including Kalshi and Polymarket. The decision, announced Friday, follows a directive from the Ministry of Finance and enforcement by the National Telecommunications Agency (Anatel), according to state-owned news outlet Agência Brasil. Authorities claimed that such services fall outside Brazil’s current legal framework and therefore operate illegally. “We have been monitoring the evolution of this sector in Brazil, which suffered a period of anarchy because there were no rules, no oversight, from 2018 to 2022,” Finance Ministry executive secretary Dario Durigan reportedly said during a press conference at the Palácio do Planalto. Read more

A U.S. soldier charged with using classified military intelligence to bet on Polymarket failed to pass Kalshi's KYC procedures.

Federal prosecutors have charged Gannon Ken Van Dyke, an active-duty U.S. Army soldier who the indictment says has served as a U.S. Army Special Forces master sergeant, with allegedly using classified information about a military operation to make more than $400,000 in prediction-market profits. After months of online discourse around suspected insider trading on Polymarket and Kalshi, […] The post Trump “not happy” with prediction markets – says world is a “casino” as Special Forces soldier arrested for insider trading on Polymarket appeared first on CryptoSlate.

Wisconsin’s lawsuit against Kalshi, Robinhood, Coinbase, Polymarket and Crypto.com deepens the battle between state gambling enforcers and federal regulators over sports prediction markets. Wisconsin’s top law enforcement official has sued a group of fintech and crypto platforms, including Kalshi, Robinhood, Coinbase, Polymarket and Crypto.com, accusing them of facilitating illegal sports betting by offering “event contracts,” according to complaints filed April 23 in Dane County. Attorney General Josh Kaul is seeking preliminary and permanent injunctions to block the companies from offering sports-related markets to customers in Wisconsin and to have a court declare the operations unlawful under state gambling law and a public nuisance. The case adds to a growing clash between state gambling laws and federally regulated prediction markets, as regulators and courts across the United States debate whether event contracts are financial instruments or illegal wagers. Read more

US prosecutors alleged that Gannon Ken Van Dyke asked Polymarket to delete his account after profiting from trades tied to the military operation in Venezuela. A US Army soldier involved in the capture of Nicolás Maduro has been charged with making over $400,000 by allegedly betting on the removal of the former Venezuelan president on a prediction market platform.  In a statement on Thursday, the US Department of Justice alleged that Master Sergeant Gannon Ken Van Dyke was involved in the planning and execution of “Operation Absolute Resolve” that led to the capture of Maduro at a residence in Caracas, Venezuela, in January.  Van Dyke allegedly used this information to buy “yes” shares in related Polymarket contracts, including "Maduro out by January 31" and "Trump invokes War Powers against Venezuela by January 31,” according to the DOJ.  Read more

Ruben Hallali, a meteorologist, told French media outlet BFMTV the sudden temperature fluctuation recorded at a weather station at the Charles de Gaulle Airport was unlikely to be a natural event. Two Polymarket accounts have attracted suspicion after making $37,000 betting correctly on two unusual temperature readings of a weather station located in a major airport in France. The two weather-focused prediction markets focused on the highest temperature in Paris on April 6 and 15, using the highest temperature recorded at the Charles de Gaulle Airport Station in degrees Celsius, according to Polymarket. French media outlet BFMTV reported on Monday that the temperature suddenly climbed to over 21 degrees Celsius on April 6, before dropping again immediately. The market resolved with the winner taking over $16,000. The winning account is under 30 days old. Read more

Prediction markets like Polymarket and Kalshi provide valuable intel, but can also incentivize insider trading. Here’s how they fight back.

Polymarket’s potential $15 billion valuation would still put it below the $22 billion valuation of competitor platform Kalshi in its latest funding round. Prediction market platform Polymarket is reportedly in talks with investors to raise another $400 million in fresh capital, The Information reported Monday. The $400 million raise would be made at a $15 billion valuation, The Information said, citing two people familiar with the matter.  The raise would add to a wave of institutional capital flowing into the predictions market space in recent months. New York Stock Exchange parent Intercontinental Exchange (ICE) invested $600 million into Polymarket in late March, while competitor platform Kalshi’s valuation was marked at about $22 billion in its last funding round. Read more

Traders on the Polymarket prediction market platform place the odds of the Strait returning to normal traffic by May 31, 2026, at 73%. Polymarket prediction market odds of the Strait of Hormuz “returning to normal” by the end of May spiked to 73% on Friday, following news that Iranian officials have temporarily opened up the Strait of Hormuz as part of a ceasefire deal. The odds climbed to a high of 82% on Friday, after Iranian Foreign Minister Seyed Abbas Araghchi announced that the Strait of Hormuz is open. Since that time, the odds have fallen back down to 73%. He said in an X post: However, traders on the platform placed the odds of the Strait returning to normal activity by the end of April at just 40%. Read more

Sterling Crispin's 'Nothing Ever Happens' bot automatically buys "No" on every non-sports Polymarket it finds. It's not that crazy.

Polymarket links briefly appeared under mainstream outlets in Google News results for event-driven queries but were later removed. Polymarket betting markets reportedly appeared inside Google News results alongside established news publishers before disappearing. A Google spokesperson told The Verge that the platform’s appearance in News was an error. “This site briefly appeared in Google News in error, and it is no longer surfacing in News,” spokesperson Ned Adriance reportedly said. Before removal, Polymarket links were shown directly beneath mainstream outlets when users searched event-driven queries. In one example cited by website Futurism, a search for “will ships transit the strait” related to the Strait of Hormuz returned a Polymarket market predicting outcomes on vessel passage alongside reporting from Reuters and The Guardian. Read more

A trio of accounts on Polymarket made more than $600,000 on U.S./Iran ceasefire markets, drawing attention as potential insiders.

Polymarket’s plan to roll out its own collateral token sounds, at first glance, like the kind of move that should eat into Circle's USDC. A platform swaps out USDC.e, introduces Polymarket USD, and the obvious retail question follows almost immediately: Does that mean less demand for USDC? The short answer is no. Polymarket USD is […] The post What will happen to USDC now Polymarket is launching its own stablecoin? appeared first on CryptoSlate.