BIIB is approaching our first resistance at 358.10 (horizontal swing high resistance, 100% fiboancci extension) where a strong drop might occur below this level pushin gprice down to our major support at 310.07 (horizontal swing low support, 61.8% fibonacci retracement, 61.8% fibonacci extension). Stochastic (89,5,3) is also approaching resistance where we might see a corresponding drop in price.