UBS Downgrades GT Advanced Technologies To Hold, Shares Tumble

Analysts at UBS downgraded GT Advanced Technologies

from “buy” to “hold” and maintained a $22 price target for the stock. GT Advanced shares have surged 366.59% over the past 52 weeks, while the S&P 500 index has gained 21.67% in the same period. GT Advanced's shares tumbled 8.41% to $17.85 in pre-market trading.