What percentage gain in what length of time is considered a bubble occurance? Or, is there a ratio? What is our bubble per index? These questions were sparked after I read this paragraph of trimtabs nightly update, I'm surprised I haven't yet aksed this question yet. paraphrase from trimtabs: The key for the market over the short term will be the size of the new offering calendar over the next two weeks. If new offerings subside to a $1 billion daily rate from the $1.7 billion daily rate of this past week, then the bubble could survive a while longer. The stock market has been bloodied this week, but it has not yet cracked. If new offerings next week are anywhere near the level of this past week, then the market should crack open.