ADTRAN Holdings (ADTN) Securities Investigation Notice - Levi & Korsinsky

ADTRAN investors are reacting to a roughly 15% selloff after preliminary Q2 2026 revenue and margin came in below guidance tied to a delayed single-customer project. NEW YORK, July 31, 2026 /PRNewswire/ -- A roughly 15% ADTRAN Holdings (NASDAQ: ADTN) selloff hit investors on July 22,...