 Shares of Ciena Corp. CIEN, -1.22 slipped 0.3 in premarket trading Thursday, after the networking systems company reported fiscal fourth-quarter revenue that rose above expectations, but profit that came up shy as cost of goods growth outpaced the revenue increase. Net income rose to 103.5 million, or 66 cents a share, from 65.0 million, or 42 cents a share, in the year-ago period. 