(Bloomberg) -- Jurors in the fraud trial of FTX co-founder Sam Bankman-Fried heard his ex-girlfriend Caroline Ellison explain how he allegedly arranged for billions of dollars in customer funds to back risky investments that led to the collapse of the cryptocurrency exchange.Most Read from BloombergIsrael Latest: Biden Pledges US Support and Sends Top EnvoyIsrael Latest: Top US General Warns Iran to Stay Out of ConflictHamas Got Around Israel’s Surveillance Prowess by Going DarkAfghanistan’s Vir