No, I think it's too far away if we talk about this. Bitcoin is only a currency but stock market is industrial that highly related to country economy too. If we talk about stock exchanges it's mean we will discuss about big scope of economics that influence the prosperity of any country. Till now bitcoin only used by a small percentage of people in the world and even only slightly influence the world economy. But I am sure that people will not ise fiat to trading/investing in stocks in the future but they will use gold "maybe the gold is gold.2.0(bitcoin)".