Zhè jiā gōngsī de dàbùfen gǔfèn yóu chuàngshǐrén zhǎngkòng.
Most of the company's shares are held by its founder.
Tips
usage
掌控 stresses holding something firmly in your own hands: a situation, a team, power. 控制 is more neutral and technical (a machine, an illness), and 掌握 leans toward mastering knowledge or skills.