"No one expected the surge to be this fast!" South Korea's stock index breaks '4000 points,' up more than 60% this year, the best in the world.

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The South Korean stock market is expected to record its strongest annual gain in 25 years, with the KOSPI index surging 61% from around 2,400 points at the start of the year, breaking through the 4,000-point mark and leading global markets.

South Korean President Lee Jae-myung's early-year pledge to push the Kospi index towards 5,000 points became the catalyst for this rally. This rare political promise, combined with surging global demand for AI chips, sent the share prices of Samsung Electronics and SK Hynix soaring, driving the overall market sharply higher. JPMorgan and Citi recently raised their target levels, with the former taking 5,000 points as its base forecast and the latter predicting 5,500 points by the end of 2026.

However, the rapid rise of South Korea’s stock market has also triggered market concerns. Nearly half of the gains are from just two stocks: Samsung Electronics and SK Hynix. Retail investors’ leveraged trading has reached record highs, and worries about an AI valuation bubble caused the index to tumble nearly 4% last Friday.

Political Promise Ignites Epic Rally

This month, the Korea Exchange displayed "Kospi 4000" in striking yellow characters on its giant screen to mark the spectacular surge few believed possible a year ago. The starting point of this rally was Lee Jae-myung’s 5,000-point promise, a rare instance of a politician setting a concrete target for the market.

At the time, the market was still overshadowed by last December’s martial law order, deepening South Korea’s long-standing "Korea discount" — a valuation markdown due to weak corporate governance. However, Lee’s ambitious proposal coincided with a global shift toward AI and chip stocks, sparking a market reversal.

Park Hong Bae, a Democratic Party lawmaker and member of the Kospi 5000 committee, stated:

“No one predicted the market would jump so fast; the gains have even exceeded our expectations.”

Part of the government’s push is to redirect capital from the overheated real estate market to the stock market. As a signal of the pan-government commitment to revitalize the market, the top financial regulator sold one of his two apartments in the affluent Gangnam area and invested some proceeds into exchange-traded funds (ETFs).

Valuations Remain Low, Corporate Governance Reform Is Key

Despite the rally fueling unease, bulls are still optimistic. Analysts believe that AI-driven demand has unleashed a “supercycle” for South Korean chip stocks. Even after this year’s surge, Samsung Electronics and SK Hynix remain relatively cheap, with forward P/E ratios of 10 and 7 respectively — far below the regional tech average of 16, and much lower than Nvidia's P/E of 27.

Federated Hermes portfolio manager Jonathan Pines commented:

“South Korean stocks are still cheap globally. If the Korea discount disappears, the market could potentially double or even triple.”

The key to driving the next round of gains lies in further advancing corporate governance reform. With the passage of the Commercial Law amendment, investors are closely watching progress on a bill to lower dividend tax rates and a separate vote on mandatory cancellation of treasury shares. Corporate groups have long used treasury shares to maintain control.

However, doubts remain about implementation. Notably, Samsung Electronics, the largest South Korean company, has yet to release specific plans for its "corporate value enhancement plan" aimed at improving shareholder returns.

Templeton Global Investments portfolio manager Yiping Liao said the next round of gains requires more progress in corporate governance reform:

“We need to see actual, concrete reforms. Rhetoric can drive short-term performance, but ultimately you need to see what the government actually does.”

Risks of Leverage and Concentration

Notably, increased retail investor leverage has added extra risk. There are signs that South Korea’s risk-loving retail investors, after investing heavily in offshore stocks, are now shifting funds back to the domestic market. If early trends hold, November will be the first month since April with net retail inflows.

According to Korea Financial Investment Association data, margin trading scaled around 26 trillion won (about $17 billion) in November, up about 50% in six months. There are also concerns about market concentration, with nearly half of Kospi’s 2025 gains coming from Samsung Electronics and SK Hynix.

Zian Investment Management CIO Kim Dojoon said that for the Korean market, whether the 5,000-point goal is reached ultimately depends on whether companies do enough to improve shareholder returns and strengthen the market. He remarked:

“If things continue to soar as they are now, it may reach 5,000 points, but will then pull back.”

Risk Warning and DisclaimerThe market carries risks; invest carefully. This article does not constitute personal investment advice and does not take into account any user’s particular investment objectives, financial situation, or needs. Users should consider whether any opinions, viewpoints, or conclusions in this article suit their specific situation. Investments are made at one’s own risk. ```