We last wrote on ADTRAN Holdings , Inc. (NASDAQ: ADTN ) in April of this year when we reiterated our 'Hold' rating on the US-based network and communications outfit. ADTN has returned close to 23% for qualifying shareholders over the pastIndividual investor with a keen interest in deriving income from investment setups. We do this by buying undervalued profitable stocks with strong balance sheets & minimal debt. Furthermore, when the opportunity arises, we like to write calls against our positions to bring ...