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Ciena earnings beat fails to hold the stock as margin guidance weighs

9/3/2026

The optical networking buildout powering AI data center expansion has been one of the cleaner demand stories of 2026, but Thursday's session showed that a strong cycle does not insulate a stock that has already priced it in.

Ciena Corp (CIEN) reported fiscal third-quarter earnings surging 215% to $2.11 per share, topping estimates, while revenue edged past views.

The stock fell anyway, because management's adjusted gross margin outlook for the October quarter gave the market a harder number to work with.

What the numbers showed For the quarter ending July 31, the optical gear maker cleared the bar on both profit and revenue.