It ought to correct overbought Nasdaq Biotechnology Index: The Nasdaq Biotech index has grown about 50 percent since Yellen's valuation comments. Superarando por mucho el desempeño de los indices composite y S&P500, this boom is due primarily to the pharmaceutical companies who have monopolized the attention of investors the past few months, beyond the debate of whether exist a bubble formation the Nasdaq Biotechnology Index It ought to correct their overbought at least 6% as it has done in later months