Source: Wall Street News

If we turn back the clock two years, few South Koreans would have believed that the fastest place to create wealth would have shifted from apartment buildings in Gangnam to the trading hall in Yeouido, Seoul.

Over the past two decades, the secret to wealth for South Korean families has been almost singular: buying a house.

Whether it's a school district property in Gangnam, Seoul, or a newly built home in Gyeonggi Province, owning a property almost guarantees wealth appreciation. Data from the Bank of Korea shows that real estate has long accounted for over 60% of South Korean household assets, while stocks have consistently represented only a single-digit percentage. For the vast majority of South Koreans, the stock market is more like a casino, while real estate is the true storehouse of wealth.

But in 2026, things suddenly took a radical turn.

In its latest report, JPMorgan Chase presented an astonishing figure: in this super bull market driven by AI and policy reforms, the South Korean KOSPI index has outperformed global markets with a staggering 109% year-to-date gain (compared to the S&P 500's mere 11% increase during the same period). This has resulted in South Korean households' domestic stock and fund assets seeing a book value increase that has now surpassed 1,000 trillion won (approximately US$730 billion).

What does 1,000 trillion won mean? It's 4.5 times the peak of retail investor frenzy during the 2020 pandemic (234 trillion won), and close to 40% of South Korea's annual GDP. This is also an unprecedented rate of wealth creation in the history of South Korea's capital market. For a country with a total population of only 51 million, this almost means that the average South Korean's paper wealth has increased by nearly 20 million won.

But this wealth-creating feast is far more complex than the numbers themselves . Behind it, three threads are intertwined: the AI-driven semiconductor supercycle, the South Korean government-led capital market system reforms, and a series of real estate control policies that forcibly lock funds into the stock market. The combination of these three factors has jointly given rise to this unprecedented wealth effect.

However, at the same time, the highly concentrated structural risks, the rampant accumulation of leverage, and the unchanging speculative impulses inherent in retail investors are also testing how long this feast can last.

Every bull market in the past has been a heartbreaking story for retail investors.

The South Korean stock market has no shortage of bull markets. The problem is that every bull market ends up being a heartbreaking story for retail investors.

From the dot-com bubble to the new energy boom, and then to the retail investor frenzy during the pandemic, every time a market rally occurs, retail investors flock in, indulging in high-frequency trading and chasing hot topics, often driving small-cap and concept stocks to outrageous valuations. And once the rally ends, their wealth evaporates rapidly.

This explains the long-standing "Korea Discount" in the South Korean stock market. For companies with similar profitability, South Korean companies are often valued lower than their American and Japanese counterparts. Investors are unwilling to assign higher valuations not because South Korean companies are unprofitable, but because they don't believe those profits will ultimately return to shareholders.

Lack of transparency in governance and the prioritization of major shareholders' interests over those of minority shareholders have been unresolved problems in South Korea's capital market for decades. This is why money earned from the stock market doesn't flow back into consumption or remain in the market—it merely serves as a "depot" for buying houses.

Understanding this vicious cycle is key to understanding what truly sets this bull market apart: it's the first time two forces have joined forces to break this cycle.

AI is the trigger, but institutional reform is the foundation.

One force comes from the demand side, called AI.

In terms of index contribution, Samsung Electronics and SK Hynix are the core driving forces behind this round of market rally. As HBM (high-bandwidth memory) becomes the most critical infrastructure in the AI ​​era, these two memory giants have exploded – Samsung Electronics has risen 201% this year, and SK Hynix has soared 256%. Together, the two companies have contributed about 72% of the KOSPI's year-to-date gains, and their total market capitalization accounts for 54% of the entire index.

The semiconductor supercycle has provided unprecedented fundamental support for the South Korean stock market.

Another force comes from supply-side institutional reforms.

Under the "Value-Up" capital market reform framework promoted by the South Korean government, long-standing problems that have plagued the South Korean market for more than two decades are being systematically addressed: amendments to the Company Law establish fiduciary duties of directors to all shareholders, strengthen the protection of minority shareholders, and strongly promote listed companies to increase dividends and share buybacks.

The reforms provided a solid institutional foundation for taking the "Korean discount" seriously for the first time, and for the first time, stocks began to be viewed by Korean households as a "speculative tool" and a "long-term asset."

It was the combination of these two forces that opened the door for South Koreans to flood into the stock market.

The total number of active stock trading accounts has surged to a record high of 107 million, and stocks and funds now account for 23% of South Korean households' financial assets, surpassing the previous peak of 21% during the 2020 pandemic.

The government's third measure: keeping money out of the real estate market.

However, for the wealth effect to truly translate into consumption momentum, market conditions and reforms alone are not enough.

The South Korean government did the third and most crucial thing: it proactively blocked the flow of money back into the real estate market.

This is the core mechanism for understanding this round of "supercycle". In the past, it didn't matter if the stock market rose, because the money earned would eventually flow into the housing market as down payments. The stock market was just a reservoir for real estate.

This time, the government has completely shut down this channel with a series of extremely strict real estate market regulations: the mortgage loan limit in the Seoul metropolitan area is capped at 600 million won, multiple homeowners are prohibited from applying for housing loans, and the supply of housing will be increased by 1.35 million units by 2030. In May 2026, the temporary capital gains tax deferral for multiple homeowners will officially expire.

Expectations of continued housing price increases have begun to cool. For the first time, the 1 trillion yuan in wealth created by the stock market has no outlet to flow into real estate, and is forced to remain in the internal circulation of the financial system—and is beginning to transmit to real consumption.

In the first quarter of 2026, South Korean department store sales grew by 17%; in the first four months of this year, new registrations of high-end imported cars increased by 41% year-on-year; and personal spending on high-end luxury goods and credit cards rebounded significantly. The wealth effect is shifting from paper figures to table turnover rates at restaurants around Yeouido and to longer queues outside Shinsegae Department Store.

In its report, JPMorgan Chase estimated that even using the most conservative wealth conversion rate of 1.3% in the history of the Bank of Korea, the 1,065 trillion won in asset appreciation would generate approximately 14 trillion won in incremental consumption. If calculated using the higher conversion rate of 4% in Western markets, the wealth effect could even reach 43 trillion won, equivalent to 1.6% of GDP. They characterized this round as a "supercycle" of wealth effect.

But not everyone sat at the head table.

But not everyone sits at the head table at this grand feast.

Wealth distribution is extremely uneven. This round of market rally was driven by two super-heavyweight stocks, while retail investors held only 15%-20% of Samsung and SK Hynix, far below their average of about 35% in the entire KOSPI market—they systematically missed the main upward wave.

According to JPMorgan Chase data, the top 20 stocks that retail investors were most keen to net buy in 2025 have only had an average return of 44% so far in 2026, underperforming the market by a full 65 percentage points.

The stratification of consumption is equally brutal. The wealth effect benefits high-end consumption first and to the greatest extent: luxury goods, imported luxury cars, and high-end department stores are the biggest winners.

Large supermarkets representing the daily needs of the public, online fast-moving consumer goods e-commerce (such as Coupang, whose stock price has fallen by 29% this year), and the food delivery industry have hardly enjoyed this wave of benefits. Food delivery has even faced headwinds as people return to offline high-end dining.

This supercycle is essentially a highly concentrated redistribution of wealth, rather than a universally beneficial prosperity.

How far can a train loaded with levers travel?

In Seoul, advertisements for index ETFs can be seen everywhere on buses and subway stations.

This should have been a reassuring sign – the widespread adoption of ETFs usually indicates that retail investors are moving from speculating on single stocks to diversifying their portfolios, which is one of the signs of a maturing market.

In South Korea, however, this signal was quickly distorted by another set of data: leveraged ETFs accounted for only 3.7% of total ETF assets, yet contributed nearly 20% of the entire ETF market's trading volume. The government even approved "double-leveraged single-stock ETFs" specifically tracking Samsung and SK Hynix, adding fuel to the fire at the height of the market frenzy.

South Korean retail investors bought ETFs, but they turned what should have been a tool for diversifying risk into a tool for doubling down their bets.

What's even more unsettling is the pervasive FOMO (Fear of Missing Out) atmosphere in the entire market.

During Nvidia CEO Jensen Huang's visit to South Korea, the stock prices of every company rumored to be meeting with him surged. Rumors circulated that he would wear a Doosan jersey to a baseball game, causing Doosan-related stocks to hit their daily limit up – only to fall back down the same day the meeting was officially confirmed. The market is operating on an extremely simplified logic: simply meeting with Jensen Huang guarantees several days of limit-up gains.

Risks are not limited to the emotional level.

Margin trading balances have soared to historically high levels, with more than half of the total market capitalization held by just two stocks. The fate of the market is now deeply intertwined with the global AI industry's prosperity.

Over the past two decades, the most popular saying among young people in South Korea has been: "If you can't afford a house in Gangnam, you'll never catch up with wealth growth."

Today, amidst the flashing numbers in the Yeouido Exchange Hall, more and more South Koreans are beginning to experience another possibility: the growth of family wealth does not necessarily have to rely on steel and concrete, but can also be tied to the train of global technological innovation.

But how far this train, loaded with leverage and fervor, can go remains to be seen; the real test has only just begun.