Bitcoin price might be taking a deep dive and we can just speculate about when a rebound will occur.
With this dip, how would exchanges fare? Would this cause exchanges to declare bankruptcy? Which of the top exchanges do you think, is stable and can withstand a really deep bitcoin price dive?
All exchanges do is simply provide a service where people are depositing and withdrawing from their platform. They handle the trades and all that and take a cut from each of the transactions that people take on their site.
They take on absolutely 0 forex risks if they are running a full reserve, which is what the exchanges are supposed to do.
The only reason why they would be bankrupt would be that they are running a fractional reserve, and have speculated on bitcoin going up without the permission of the users. Otherwise, they won't be affected whatsoever by the crash of bitcoin, apart from a dive in fiat revenue.