I don't believe that there will be such crush (if any) to make the stock market to go at '80 or '90. There are time which are spoken about the crash of us dollar, the crash or even the disappear of euro, e new crash of the world economy and now the colossal credit bubble of China. But what we are seeing is a more strong or stable us dollar, any big problem for euro a tremendous development of China and normal other markets. But if it would be a crash of stock market the investors (according to me) will go mainly at other markets and not at bitcoin market. Even this last market will be affected by the crash of the stock market (always if any) the other (fully legal and known) markets will be more attractive compared with bitcoin. Bitcoin is yet away from such world. Or even if is within it have a weak status. This doesn't mean that cannot be attract investors. But, as for me, would be few and not so "powerful" to affect hardly its price. The most important factor during the above period which will affect the price of bitcoin, as for me, remain the halving. Or some run of bitcoin in higher top figures only following its free will.