Seoul National Alumni Club Ring Reaped 20 Billion Won on M&A Tips

Five suspects in their 30s and 40s work at listed firms and fund managers Undisclosed M&A information on five stocks was used for trading Tips were also passed to family members and acquaintances Shares were bought in advance and sold after prices rose Illicit gains topped tens of billions of won over five years Securities regulator froze payments from the suspects' accounts

Finance|
|
By Kim Nam-gyunsouth@sedaily.com
||
Hwang Sun-oh, head of the Joint Response Team for Eradicating Stock Price Manipulation, holds a briefing on the crackdown on an "elite university information cartel" at the Korea Exchange in Yeouido, Seoul, on the morning of the 29th. Newsis - Seoul Economic Daily Finance News from South Korea
Hwang Sun-oh, head of the Joint Response Team for Eradicating Stock Price Manipulation, holds a briefing on the crackdown on an "elite university information cartel" at the Korea Exchange in Yeouido, Seoul, on the morning of the 29th. Newsis

A group that built an "information cartel" through ties formed at a university club and shared price-sensitive undisclosed information for years, reaping more than 20 billion won ($14 million) in illicit gains, has been caught by a joint task force on stock price manipulation.

The joint task force, made up of the Financial Services Commission, the Financial Supervisory Service and the Korea Exchange, said on the 29th that it had searched more than 20 locations, including the workplaces and homes of officials at private equity fund managers and listed companies suspected of the scheme. The Securities and Futures Commission also froze payments from the suspects' brokerage accounts holding the illicit gains under the Financial Investment Services and Capital Markets Act.

According to the task force, about five core suspects repeatedly shared favorable undisclosed information on five stocks that they obtained in the course of their work over roughly the past five years. They also passed the information to family members and acquaintances for use in stock trading. The suspects bought the shares before the information was disclosed to the market and sold them at higher prices once the stocks rose after disclosure, reaping more than 20 billion won in total illicit gains.

The core suspects are in their 30s and 40s and all came from the same management consulting club at Seoul National University, according to the task force. All of them also built their careers at the same global consulting firm. They later moved to private equity fund managers or took executive posts at listed companies, where they handled merger and acquisition work such as tender offers.

The task force first identified accounts suspected of trading on undisclosed information through the exchange's market surveillance, then traced the links between the stocks traded and the people involved. It combined cases in which the same suspects were repeatedly implicated for in-depth analysis, and from May it conducted the investigation in cooperation with the relevant agencies.

"We have been investigating for two years, and we confirmed the personal connections by widening the scope through extensive fund tracing, trading analysis and examination of personal relationships," an official at the task force said. "Through the searches, we will verify the facts by checking whether the evidence matches the statements." Once the additional investigation is completed, follow-up steps such as referral to prosecutors and fines of up to twice the illicit gains are planned.

Joint Response Team on Stock Price Manipulation - Seoul Economic Daily Finance News from South Korea
Joint Response Team on Stock Price Manipulation

Original reporting by Kim Nam-gyun for Seoul Economic Daily.

AI-translated from Korean. Quotes from foreign sources are based on Korean-language reports and may not reflect exact original wording.

Watch · Seoul Economic Daily

More →
4:05

AI KEY

Preview
Korean Corporate Intelligence HubKOSPI · KOSDAQ · 12 sectors

A live, cap-weighted view of every KOSPI and KOSDAQ sector, with same-day Korean reporting distilled by company — built for foreign investors, correspondents and analysts who need to scan Korea before the next session.

Korea Company Atlas

Preview
Market Ontology · The Feedback LoopKFTC 2025 · 92 groups · 121,954 articles

An English ontology of the Korean market — how companies, the media, the government and the National Assembly move each other in a loop. Korea's named controlling persons and designated business groups are a mechanism, not a risk to be priced blind.

SIGNAL

Now live
English Edition · Capital MarketsM&A · IPO · PE · Fund Flows

SIGNAL English Edition is live — Korea's deal desk reporting in English. M&A, IPOs, private equity and fund flows, covered daily for global institutional investors. Browse free; subscriber-only scoops at the 50% intro rate.