The outlook for the prime-brokerage sector in 2022 could hinge on the "significant stress test" resulting from three big events in 2021, including the collapse of Archegos Capital Management, says Jack Seibald, Cowen's managing director and global co-head of prime brokerage and outsourced trading. "We're entering 2022 with fewer players in the prime-brokerage business because there are those who bore the brunt of the losses and called it quits or those who chose to no longer commit the resources to this business line," Seibald says. Full Story: Hedgeweek (London) (1/5)