Prediction market platform Kalshi is reportedly in advanced talks to raise approximately $1 billion in a new funding round at a valuation of $40 billion. Existing investor Sequoia Capital and Wellington Management are negotiating to lead the round, which could also include Tiger Global Management and Dragoneer Investment Group, according to sources familiar with the matter cited by Reuters.

This development follows Kalshi’s closure of a $1 billion Series F round in May at a $22 billion valuation, which had already doubled its valuation from December levels. Reports indicating Kalshi was seeking funding at a $40 billion valuation first emerged in June, when the Financial Times noted the company was in talks that could close as soon as the third quarter of this year. Cointelegraph contacted Kalshi and the involved investment firms for comment but did not receive an immediate response.