Ciena Corp.’s (NASDAQ:CIEN) Quarterly Loss Swells on Higher Operating Costs – CIEN, CSCO, ERIC, DELL, QCOM, TSM, TSL, ALLT

Ciena Corp.’s (NASDAQ:CIEN) reported that its fiscal fourth-quarter loss swelled as the networking-equipment firm’s superior operating costs outnumbered sales increase.

For the present quarter, the firm estimated sales of $435 million to $460 million, in contrast with previous forecast of …