ADTRAN Holdings, Inc. announced preliminary second quarter 2026 results that fell below previous guidance and analyst consensus. Preliminary revenue is expected to be between $280.0 million and $282.0 million, compared to guidance of $283.0 million to $303.0 million. Preliminary non-GAAP operating margin is expected to be 3.5% to 4.0%, below the 5.0% to 9.0% guidance range. The company expects preliminary non-GAAP diluted earnings per share to be between $0.03 and $0.05, which is below the analyst consensus of $0.13. ADTRAN Holdings, Inc. is a provider of networking and communications solutions.
