Tā tōngguò kònggǔ chéngwéi gōngsī de shíjì kòngzhìrén.
He became the actual controller of the company through his controlling shareholding.
Tips
usage
控股 is typically used in financial/corporate contexts. 控股公司 is a 'holding company'. The word can function as both a verb and an attributive (as in 控股权 = controlling rights).
