With Barclays boss C.S. “Venkat” Venkatakrishnan less than a year into his plan to revive the U.K. bank and its stock price, the signs are promising. Shares jumped Thursday, on course for their highest close since 2015, after Barclays reported forecast-beating quarterly earnings. The investment bank was a bright spot. As at bigger Wall Street rivals, income from stock trading and advisory fees rose, boosted by volatile markets and a dealmaking revival.