Apparently a few hedge funds “in the know”, helped by that nice man Mr Farage made a killing on the drop in sterling in June2016.
It’s a stretch to suggest, on what is reported here, that Brexit was engineered for this reason - rather than someone with access to a bit of insider information spotting a likely move in the market and taking advantage but it shows who the real winners from Brexit are likely to be and it isn’t “Will, of the people”