SPDR S&P 500 (SPY)

[Ramiel]

One thing that we can say with certainty about a UK vote to leave the EU is that uncertainty would increase significantly. Aside from the UK-EU relationship, it is also likely that the UK would have to negotiate new relationships with some trading partners outside of the EU (as arrangements put in place while the UK was in the EU would no longer apply). That includes discussions with Mexico, South Africa, Korea, Norway, Switzerland, and Israel (among others).