Buy Signal Flashing For Struggling Biotech

Biotech Vertex Pharmaceuticals (VRTX) has been struggling on the charts over the past few weeks, putting a dent in its now 10% year-to-date gain. The stock’s 5.6% post-earnings pop earlier this month has already been erased, and VRTX is now trading at its lowest level since June. The upside is that this extended pullback has the shares encountering a historically bullish area on the charts.The "buy" signal in question is a test of the stock’s bottom 20-day Bollinger Band. After the past eight tests of this ...