I think that's a fair question. We have actually done this before when World War 1 started. https://en.wikipedia.org/wiki/New_York_Stock_Exchange#20th_century

I think that's a fair question. We have actually done this before when World War 1 started. https://en.wikipedia.org/wiki/New_York_Stock_Exchange#20th_century https://en.wikipedia.org/wiki/New_York_Stock_Exchange#20th_c... I think doing so now would be a massive disaster as it would cause extreme panic.