Sources: Kalshi is in advanced talks to raise $750M+ co-led by Sequoia Capital and Wellington Management at a $40B valuation; Kalshi was valued at $22B in May (Yueqi Yang/The Information)

Yueqi Yang / The Information: Sources: Kalshi is in advanced talks to raise $750M+ co-led by Sequoia Capital and Wellington Management at a $40B valuation; Kalshi was valued at $22B in May — Kalshi, the biggest prediction market, is in advanced talks to raise at least $750 million in a new financing round at a $40 billion valuation …