To say that all recent stock price increases, much less the one-day price of twitter's stock specifically, are caused by QE alone is an extreme claim and it is

To say that all recent stock price increases, much less the one-day price of twitter's stock specifically, are caused by QE alone is an extreme claim and it is not my burden to disprove it. The simpler and more plausible explanation for stock market growth is coinciding GDP and earnings growth. QE should lead to a mild preference against (UST) bonds by lowering yields, but it is dubious that this alone could explain stock market indexes doubling over the same period. Twitter's one-day stock price specifically is idiosyncratic investor behavior and blaming that on QE is absurd nonsense.