Kalshi has successfully completed its inaugural customized block trade, with liquidity support from Jump Trading. The transaction, facilitated by Greenlight Commodities, was conducted on behalf of a Houston-based environmental hedge fund. The fund sought exposure to a contract predicting the outcome of the California May carbon allowance auction. Kalshi CEO Tarek Mansour highlighted the potential of institutional applications of prediction markets, estimating a market size of $10–15 trillion. Mansour noted that the growth could be even more significant if these products, currently limited to Wall Street, gain broader popularity.