Trump's praise caused South Korean pen manufacturer stock prices to big pump by 60%, leading to a halt in sales.

On August 27, Jin10 reported that Trump’s praise has driven the stock price of South Korean pen manufacturer MonAmi to its highest level in 19 months, with the stock rising 24% on Wednesday and over 60% in two days, making it the best-performing stock on the Seoul Composite Index this week. On Monday, during his first face-to-face meeting with South Korean President Yoon Suk-yeol at the White House, the pen used by Yoon for signing caught Trump’s attention. Trump asked about the pen for two minutes and praised it as a “great pen” after picking it up. Reportedly, this brown pen uses a MonAmi nib and is engraved with a traditional Korean phoenix design, handcrafted by Seoul's Zenyle company. Zenyle confirmed on its website that the company produced this pen at the request of the South Korean presidential office, and due to a surge in orders, the company has completely suspended the sale of pens.