Samsung Electronics Chairman Lee Jae-yong saw the value of his shareholding increase by 28 trillion won ($18.69 billion) in the second quarter, according to Yonhap News Agency.
The surge coincides with South Korean equities reaching record levels, lifting the market value of the conglomerate's largest shareholder.
The valuation jump underscores the market's confidence in Samsung's turnaround.
The chipmaker is preparing to report a second-quarter operating profit that has jumped approximately 18-fold year-over-year, reaching a new record high.
This dramatic improvement is fueled by intensifying demand for memory chips from artificial intelligence infrastructure buildouts.
For investors, the chairman's growing stake value serves as a barometer for the broader Korean market rally.