Biotechnology ETFs surged Monday as Vertex Pharmaceuticals (VRTX) shares skyrocketed 55% on positive study results for its two-drug therapy for cystic fibrosis, a genetic disorder afflicting about 70,000 people worldwide. First Trust NYSE Arca Biotech Index (FBT) popped 3% to 44.79 -- just a hair short of a 52-week high -- outperforming nearly all other nonleveraged ETFs. The 20-stock portfolio holds a 5% stake in Vertex. FBT was already