Actor Kim Soo Hyun is facing serious allegations about a stock manipulation scandal involving his agency, Gold Medalist, and the late actress Kim Sae Ron.

On April 11, Kim Yong-ho, head of the YouTube channel Garo Sero Institute, conducted a live broadcast claiming that the Gold Medalist is involved in questionable stock practices.

The news follows just one day after KBS News reported that an online education company listed on the KOSDAQ was under investigation for similar suspicions.

An investigation was launched by police amid suspicions of a major entertainment agency. According to reports, the company's stock price soared from approximately 1,000 KRW three years ago to over 10,000 KRW within nine months. But then came a sell-off that took the stock straight back down to where it came from in less than two months.

The Financial Intelligence Unit under the Financial Services Commission has alerted the police to potential market manipulation. Additionally, the Korea Exchange flagged unusual trading activity linked to the agency. Authorities are investigating the accounts that may have been involved in this manipulation and tracking profit flows.

A prominent investor in the company is a fund that allegedly includes an agency, which one of the top celebrities has lately set up by himself. When approached by KBS, Gold Medalist denied any wrongdoing, stating, "We have never interfered with the stock price of the mentioned company."

During his livestream, Kim Yong-ho alleged that the agency cited in KBS's report shares the same building as Gold Medalist. He referenced an article detailing the decline of Gold&S, a company in which Gold Medalist holds shares.

Yong-ho also claimed that Kim Sae Ron was listed as a special related party of Gold&S, holding 66,000 shares at one time. He questioned why actress Seo Ye-ji, also previously associated with Gold Medalist, was not mentioned in this context and suggested that Kim Sae Ron was used without proper representation.

In connection with this scandal, it was revealed that Ryu Tae-hyun, a director affiliated with Gold&S, had attempted to contact Kim Sae-ron's father multiple times before her passing.

Gold Medalist, founded on November 22, 2019, is co-headed by CEO Ahn Sung-soo and CCO Lee Ro-bae. The agency is known for co-producing popular dramas such as "It's Okay to Not Be Okay" and "One Ordinary Day."

Notably, during a press conference on March 27 held by Kim Sae-ron's family, a handwritten letter addressed to Kim Soo-hyun was revealed. The letter was never delivered due to access restrictions at his apartment. In it, Kim Sae-ron expressed her hope that it would reach him.

The ongoing investigation continues to unfold as fans and industry insiders await further developments in this high-profile case.