CompaniesTech group searches for ways to turn cash reserves into profit growthHitachi's April announcement of its largest share buyback ever was met with a lukewarm reaction as its share price fell 6% the next day. © ReutersTAKURO HOSODAMay 21, 2026 05:26 JSTTOKYO -- Hitachi's cash reserves are piling up, essentially breaking the company free from debt for the first time in 36 years at the end of March, but investors are not impressed.