Adtran's stock plummeted 8.56% during pre-market trading following the release of its first quarter 2026 financial results.
The networking equipment provider reported revenue of $286.1 million, slightly above analyst estimates, and non-GAAP adjusted earnings per share of $0.14, which beat expectations. However, the company posted a GAAP diluted loss per share of $0.01 for the quarter.
For the second quarter of 2026, Adtran provided revenue guidance in the range of $283.0 million to $303.0 million. The market's negative reaction suggests investor disappointment with the GAAP loss and the company's forward outlook.