Movers Roundup: Ciena, Pfizer

Among the stock activity stories for Tuesday, May 12, from AP Financial News:

NEW YORK (AP) — Shares of Ciena Corp. declined after an analyst downgraded the telecommunications and network equipment company, saying its key customers are "aggressively cutting" their capital expenses.

TRENTON, N.J. (AP) — Shares of drugmaker Pfizer Inc. jumped after an analyst issued a report citing benefits of its planned acquisition of rival Wyeth and stating that those were "not yet reflected in the stock."

HARTFORD, Conn. (AP) — Shares of McDermott International Inc. ticked higher, a day after the engineering and construction firm reported a 37-percent drop in first-quarter profit, while still exceeding Wall Street expectations.

NEW YORK (AP) — Despite Holly Corp.'s strong first-quarter results, a continued deterioration in demand and challenging industry fundamentals will pressure the petroleum refiner, an analyst said as she lowered her profit estimate for the company.

PORTLAND, Ore. (AP) — Shares of Winn-Dixie Stores Inc. soared following a strong third-quarter report from the Jacksonville, Fla.-based grocery store operator.