Ciena's stock experienced a significant pre-market plunge of 6.27% on Thursday.
The networking equipment company reported first-quarter financial results that exceeded analyst expectations. Adjusted earnings per share came in at $1.35, surpassing the estimated $1.17. Revenue for the quarter was $1.43 billion, also beating the consensus estimate of $1.40 billion. Furthermore, the company raised its revenue guidance range for the full fiscal year 2026 to between $5.9 billion and $6.3 billion.
Despite these positive results, investors reacted negatively to the company's forward-looking guidance. Ciena provided revenue guidance for the second quarter of fiscal 2026 of $1.5 billion, plus or minus $50 million. This outlook appears to have fallen short of market expectations, leading to the sharp pre-market sell-off as traders reassessed the company's near-term growth prospects.