After that outlook, shares in the company fell 20 percent, "to levels we consider reasonable," he said. THE BIG PICTURE: Ciena offers companies the ability to improve the capabilities and efficiency of their data network. It specializes in fiber optic cables, Ethernet and network automation. THE ANALYSIS: Leopold said that the company's ability to predict business in coming quarters is "poor" and that he expects the company's business to improve no earlier than the quarter through April of next year. He has no target price on the shares, which he rates "Market Perform." SHARE ACTION: Ciena shares fell 43 cents, or 2.9 percent, at $14.43 Monday. That's below a 52-week high of $18.39 reached in mid-August.