Park Su-ryon

The author is the deputy editor of Content Division Three and the head of corporate research at the JoongAng Ilbo.

News of Nvidia CEO Jensen Huang’s visit to Korea sent the stock market swinging wildly over the past week.

Shares of companies scheduled to meet Huang surged, with some reaching daily price limits or record highs, only to fall a day or two later as investors rushed to take profits.

The most striking example came when rumors spread that Huang would throw out the ceremonial first pitch at a baseball game wearing a Doosan uniform. Shares of listed Doosan Group companies jumped across the board on the speculation. Ironically, some of those stocks fell on Thursday, when the pitching appearance was officially announced.