'Information cartel' of elite university alumni busted for trading on M&A tips

Financial regulators have caught a group of finance professionals who met through elite university business clubs and global consulting firms sharing nonpublic information on listed-company mergers and acquisitions, reaping more than 20 billion won ($14.7 million) in illicit gains.

The suspects continued sharing insider information for about five years even after moving to private equity fund managers and listed companies, and drew family members and acquaintances into the trading as well. Authorities view the case not as a one-off misuse of inside information by a single individual, but as a long-running "information cartel" formed among financial professionals.

The Joint Response Team to Eradicate Stock Price Manipulation — a body comprising the Financial Services Commission, the Financial Supervisory Service and the Korea Exchange — announced Tuesday that it had raided more than 20 homes and offices of suspects believed to have used nonpublic M&A information. The Securities and Futures Commission also froze the brokerage accounts of some suspects to prevent them from concealing illicit gains.

What drew regulators' attention was a long-running information-sharing network formed among so-called financial elites. The key suspects had built ties through top-university business clubs and global consulting firms before moving on to private equity fund managers and listed companies, where they handled M&A-related work including tender offers.

Over roughly the past five years, the suspects are alleged to have continuously exchanged nonpublic, market-moving information — including tender offer plans and governance restructuring at multiple listed companies — that they came across in the course of their work.

Tender offers, M&A deals and governance overhauls are among the most consequential types of corporate information, capable of moving a company's share price sharply the moment they are announced. The Capital Markets Act therefore prohibits trading on such information before it is disclosed to the public, or passing it to others for use in trading.

Authorities noted that the suspects were professionals who handled M&A transactions directly and were bound by strict confidentiality obligations.

The suspects are alleged to have passed the information they obtained not only to fund their own stock trades but also to family members and acquaintances. The scheme involved buying shares in the relevant companies before the nonpublic information became public, then selling at a profit once the announcement drove up the share price.

The total illicit gains identified by authorities so far exceed 20 billion won. The circle of those involved in the insider trading widened as information spread beyond the core group to family members and acquaintances.

Regulators say this case stands apart from a typical insider trading case. Rather than a single individual's isolated lapse, professionals at different firms repeatedly shared information on multiple stocks over an extended period, exploiting their personal networks.

Authorities consider the matter serious because the source of the information was professionals bound by confidentiality obligations, and because family members and acquaintances were also drawn into the trades.

The case first came to light through market surveillance by the Korea Exchange. Suspicious trading by individual suspects had been flagged on multiple occasions, but there had not been enough evidence to establish who was passing information to whom or how the parties were connected.

While reviewing insider trading cases detected through market surveillance over recent years, regulators noticed that the same suspects kept appearing across multiple separate cases. Concluding that a deeper, consolidated analysis was needed, the FSC, FSS and Korea Exchange launched a joint investigation in May, led by the Joint Response Team.

The team also drew on experience from an earlier case. It had conducted a search and seizure of an executive at NH Investment & Securities — the tender offer manager — in October last year over alleged use of nonpublic information, and referred the suspect for prosecution in May this year.

Building on that investigation, authorities analyzed suspicious trading patterns over recent years and identified signs that finance professionals handling M&A work had been repeatedly sharing nonpublic information with one another.

The Joint Response Team plans to complete its additional investigation by combining materials seized Tuesday with existing findings, then take strict action against the suspects. Depending on the outcome, it will pursue criminal referrals and may impose penalties of up to twice the amount of illicit gains.