Shares of Ciena tumbled 6% in premarket trading on Thursday even after the networking company reported better-than-expected earnings and revenue in its fiscal second quarter.
Ciena reported adjusted earnings of $1.64 a share for the quarter, up from 42 cents a year ago and above Wall Street's call for $1.46, according to FactSet. Revenue jumped 40% year over year to $1.57 billion, ahead of analysts' consensus forecast of $1.51 billion.
Despite the solid results, Ciena stock fell 7% in premarket trading. Shares had risen 749% over the last 12 months thanks to explosive demand for optical networking at artificial-intelligence data centers.
Investors may have wanted even stronger guidance. Ciena lifted its revenue guidance for the fiscal year to $6.3 billion, plus or minus $100 million, up from an earlier range of $5.9 billion to $6.3 billion. Analysts were looking for $6.18 billion in revenue heading into the report Thursday.
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