The click-baity title of that Fortune article you linked is misleading vs what he's actually saying. The title refers to cuts in positions in the UK, but these

The click-baity title of that Fortune article you linked is misleading vs what he's actually saying. The title refers to cuts in positions in the UK, but these would actually move to continental Europe in the case of a Brexit. His own quote from the article : "So if the UK leaves the EU, we may have no choice but to re-organize our business model here. Brexit could mean fewer J.P. Morgan jobs in the U.K. and more jobs in Europe.”