A Brexit would hammer investment in the U.K and Europe for years, JPMorgan's corporate and investment bank boss told CNBC, as he echoed warnings that the bank would need to move thousands of jobs to Europe if the U.K. left the European Union (EU).
Daniel Pinto, JPMorgan's chief executive for corporate and investment bank, said that even if there were long-term benefits to a Brexit - benefits that he said were currently difficult to envisage - the uncertainty it created "would have substantial economic impact for a number of years."
"For a number of years, the decision of Brexit will create so much uncertainty that it will hurt real investment in the U.K. and Europe," he said.
Global markets are on edge in the build-up to the June 23 referendum in which British citizens will vote on whether to remain within or leave the EU. Recent opinion polls have swung toward the leave camp, which gained momentum on Monday when the influential
The Sunnewspaper endorsed a Brexit.