Barclays second-quarter profit beats estimates as investment banking revenues swell

One Churchill Place skyscraper, the Barclays Plc headquarters, at Canary Wharf in London, U.K., on Thursday, Jan. 7, 2021.  Bloomberg | Bloomberg | Getty Images British bank Barclays on Tuesday beat profit expectations and announced a £1 billion ($1.33 billion) share buyback as market volatility boosted investment banking revenues. Pre-tax profit beat estimates at £2.5…