In what is certainly a historic, and quite stunning, market first, not to mention prima facie evidence that Janet Yellen was right about the biotech (and not only) bubble, last week the equity markets experienced something that has not happened in decades: a biotech firm went public, traded for six days, only to announce Friday that it would void its IPO and won’t issue shares after all, thanks to a key investor’s failure to follow through on a commitment to buy stock.