A large transaction on the decentralized betting platform Polymarket briefly increased the probability of Donald Trump winning the 2024 presidential election to 99%. User “GCorttell93” bought 4.5 million contracts in favor of Trump with an investment of around $3 million, leading to a mispricing. One of these trades occurred at a 99% probability with a purchase of $275,000, while the actual odds on the platform were 63% at the time. On the betting platform, odds are updated instantly with users' trades, but this large transaction destabilized the odds.
In the presidential election betting on the platform, Trump now has a 63% chance of winning, while Kamala Harris has a 36% chance. As the November 5th presidential election approaches, the competition between Harris and Trump is intensifying. The rate volatility caused by the large investment has changed market expectations for the outcome of the election, albeit for a while. On the other hand, while some polls show Harris in the lead, developments in the betting market are adding a different dimension to the election race.
