Ciena (CIEN) - Get Ciena Corporation Report was up 3.3% in preopen Island trading after Goldman Sachs said the company and ONI Systems (ONIS) could report strong quarters despite the downturn among optical networkers, although they face pricing pressures.

ONI was up 4.7%.

Goldman said expectations for the sector have been "tempered" after a series of warnings.

The brokerage said there are no signs that business is stabilizing, but companies that meet estimates in this environment will see their stock prices rise.

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