Coin World news, DefiLlama data shows that the open interest of the prediction market platform Kalshi exceeded 200 million US dollars in late September, setting a new historical high. In April this year, this figure was less than 50 million US dollars, growing by more than 300% in the past six months. During the same period, trading volume also showed an upward trend, with daily trading amounts in September maintaining between 50 million and 100 million US dollars.