Prediction markets using event contracts let participants buy rights to receive payment if specified events occur, with prices set by supply and demand. These markets can function similarly to traditional gambling, where participants wager on outcomes, but they differ from betting against a house because market pricing reflects trading activity. Recent allegations include insider trading and market manipulation, including a case involving classified information used to place large wagers on Polymarket tied to a military operation. Additional reporting found well-timed bets connected to geopolitical and cryptocurrency-related events that suggest insider trading. Greater oversight is needed to manage these risks and prevent worsening gambling problems.
"The prediction markets that have been in the press lately, such as Kalshi or Polymarket, involve what's known as event contracts. They work like this: You purchase the right to get a payment if the event occurs - like the Patriots win the Super Bowl. If they win, you get $1. If you lose, you don't get anything."
"Functionally, prediction markets can be very similar to traditional gambling, except that with the gambling, you're typically betting against the house, and the house sets the price. An event contract is market-based, and supply and demand set the price. Still, event contracts look an awful lot like gambling."
"In April, a U.S. Army soldier was charged with using classified information to bet on the timing of a U.S. military operation to capture Venezuelan President Nicolás Maduro. According to the Justice Department, the soldier, who took part in the operation, made more than $400,000 in wagers he placed on Polymarket."
"A recent investigation by The New York Times found a number of well-timed bets on Polymarket involving the war in Iran, cryptocurrency, and other events that hint at insider trading."
Read at Harvard Gazette
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