Citigroup has tapped Shobhit Varshney, a longtime IBM executive, as its new head of AI, the latest sign of how Wall Street is racing to bring artificial intelligence deeper into banking. Varshney comes from IBM, where he was the head of data and artificial intelligence for the technology pioneer's consulting business. At Citi, he will report to Anand Selva, the bank's chief operating officer; and will work closely with the firm's chief technology officer, David Griffiths, to scale AI across the company, ac ...