Ciena Corporation (CIEN) is up 7.88 percent to $239.34, gaining$17.49 on Thursday after the company posted fourth-quarter results that showed a drop in profit but a strong increase in revenue. Ciena reported earnings of $19.48 million, or$0.13 per share, compared with $37.02 million, or$0.25 per share, a year earlier. Revenue rose 20.5% to $1.35 billion from$1.12 billion last year.The stock is trading at $239.34 after opening at$236.35, moving between $222.45 and$248.00 so far today on the New York S ...