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Campaign staffers tell NPR they make 'thousands' betting on their own candidates

market manipulation. The agency oversees and regulates prediction markets and allows election betting in some

A Polymarket trader made $300,000 betting on Biden's pardons, a new analysis shows

prediction markets to operate.](https://npr.brightspotcdn.com/dims3/default/strip/false/crop/1997x1997+920+0/resize/100/quality/85/format/jpeg/?url=http%3A%2F%2Fnpr-brightspot.s3.amazonaws.com%2F98%2Fb1%2F02693b134b46b25e18f90225feda%2Fgettyimages-2263571512.jpg)](https://www.npr.org/2026/04/02/nx-s1-5771635/trump-cftc-kalshi-polymarket-lawsuits) ### [Technology](https://www.npr.org/sections/technology/) ### [Trump administration sues three states over attempts to regulate

Prediction site Kalshi fines three US candidates who bet on own election races

regulated prediction market exchange, found he placed two trades on their platform, the first in a market

From Iran to Paris weather: Alleged prediction market violations start stacking up

prediction markets. Regulation discussions are ongoing in other states, including Arizona and Massachusetts. Donald Trump

Prediction market Kalshi docks three US candidates for betting on own races

regulations](/economy/2026/3/17/us-lawmakers-murphy-casar-push-legislation-to-regulate-prediction-markets) in online betting, amid an explosion in popularity for prediction market platforms. The sites

US gambling addiction is ‘out of control’ as betting markets boom, policy expert warns

regulation of the industry. The rapid expansion of online gambling, prediction markets and sports betting

NPR went looking for Polymarket's Panama headquarters. It's elusive

prediction market site that has flourished in President Trump's second term. Polymarket, which is worth an [estimated](https://www.reuters.com/business/polymarket-talks-raise-money-about-15-billion-valuation-information-reports-2026-04-20/) $15 billion, moved to its Panama base following scrutiny from American regulators

The insider trading suspicions looming over Trump's presidency

market integrity", adding that it "proactively" works with regulators and law enforcement to do so. In March this year, both Polymarket and Kalshi outlined new rules to crack down on insider trading. Predictions

Iran war’s big winners: Wall Street, weapons firms, AI and green energy

regulators have pledged to crack down on insider trading in prediction markets following suspiciously well

French police probe suspected weather device tampering after odd Polymarket bet

prediction markets, lawmakers have proposed a flurry of actions to rein in the sites and dozens of states have launched lawsuits aiming to have the apps regulated

Number of billionaires globally could reach 4,000 in next five years

regulation were pushing the super-rich to a smaller group of cities that offer “opportunity and predictability”. Rory Penn, who chairs the private office business at Knight Frank, said that wealth creation was rising against

Israel and Lebanon extend ceasefire. And, Trump eases medical marijuana rules

prediction market wagers.** Federal prosecutors yesterday unsealed an indictment against U.S. Army Special Forces soldier Gannon Ken Van Dyke, accusing him of reaping more than $400,000 in profits on Polymarket by using insider knowledge

US reclassifies some marijuana products as less dangerous drug

regulating drugs. Schedule III is for substances with “a moderate to low potential for physical and psychological dependence”. “This rescheduling action allows for research on the safety and efficacy of this substance, ultimately providing patients