SEOUL, May 28 (AJP) - May 27, 2026, is likely to be recorded as a turning point in the history of both global capital markets and the artificial-intelligence industry. The day's gains were not merely another rally in technology shares. They were a symbolic demonstration of where industrial power now resides in the age of AI, of what determines national competitiveness in the twenty-first century, and of how strong companies, strong markets and strong economies form a single virtuous cycle. The roster of the world's fifteen most valuable listed companies had itself become a map of the global economy.
Nvidia stood at the top at $5.4 trillion, followed by Alphabet at $4.6 trillion, Apple at $4.5 trillion, Microsoft at $3.1 trillion and Amazon at $2.9 trillion. Taiwan's TSMC followed at $2 trillion, Broadcom at $1.8 trillion, Saudi Arabia's Aramco at $1.7 trillion, and Tesla and Meta at $1.5 trillion each. And in the next tier, South Korea's Samsung Electronics, at $1.35 trillion, and SK hynix, at $1.06 trillion, stood shoulder to shoulder with the world's leading firms. Berkshire Hathaway at $1.04 trillion, Micron at $1.01 trillion and Eli Lilly at $950 billion rounded out the top fifteen. (The figures represent a single day's snapshot; intraday, SK hynix rose higher still.) These figures are not a mere sum of share prices. They are the clearest evidence that the axis of the world economy is shifting decisively away from oil, automobiles, traditional finance and manufacturing toward AI and semiconductors, platforms and data, biotechnology and advanced technology.
The most historic scene of the day was the simultaneous entry of the three memory-chip makers into the trillion-dollar club. SK hynix rose to roughly 1,680 trillion won intraday, about $1.12 trillion at its peak, crossing the threshold decisively for the first time, and in that moment Samsung Electronics, SK hynix and Micron Technology — the world's three memory makers — stood together in the trillion-dollar range. It was the first time this had occurred in the history of the world's equity markets.
Memory chips were long regarded as a cyclical industry, one in which prices soared in booms and collapsed as soon as supply expanded. The arrival of the AI era changed the meaning of memory. It is no longer a simple storage device but the memory of AI itself. Hyperscale AI models must read, write and learn from vast quantities of data simultaneously, and that requires high-bandwidth memory, or HBM, of a wholly different order than conventional DRAM. If Nvidia designs the brain of AI, then Samsung Electronics, SK hynix and Micron are the companies that supply the memory and speed that allow that brain to function. For that reason, the market has begun to stop viewing the memory industry as the simple cyclical business of the past. May 27 was the day the world's markets formally confirmed that the winners of the AI era are not only the platform companies but the memory-chip makers as well.
The day carried a second historic meaning: South Korea became the second nation in the world, after the United States, to hold two trillion-dollar companies at once. With Samsung Electronics and SK hynix entering the trillion-dollar club together, Korea has risen from a catch-up manufacturing nation to a capital-market power holding two of the AI era's core strategic firms. It matters, too, that a substantial portion of the non-U.S. trillion-dollar giants are now Korean companies. Taiwan, for all the weight of TSMC, holds only one such firm; Saudi Arabia's Aramco stands alone as an energy colossus; and while the big-technology firms of Europe and the United States still dominate world markets, no other nation outside the United States now holds two trillion-dollar companies at once. Yet Korea's possession of two ultra-large semiconductor companies signifies something beyond a rise in corporate value: it means the standing of the Korean economy itself is changing. That the combined market value of Samsung Electronics' common and preferred shares has surpassed 2,000 trillion won is an unprecedented record in the history of Korea's capital market. It is a symbol not merely of one company's success but of the entire Korean economy ascending onto the core axis of the world economy — AI, semiconductors and advanced memory.
This historic moment, however, should not be read with celebration alone. It is true that strong companies make strong markets, and strong markets in turn make strong economies. But for that to become genuine truth, the capital market must function not as a mere arena for speculation but as a national artery supplying funds to future industries. A securities market is not simply an exchange for buying and selling shares. It is core infrastructure that allocates a nation's capital efficiently and channels funds into future growth industries. Where a securities market is developed, companies need not depend solely on bank lending but can raise large sums through equity and bond issuance. That capital flows into research and development, capital expenditure, mergers and acquisitions, and overseas expansion, raising corporate competitiveness and productivity. Future industries such as AI, semiconductors, biotechnology and aerospace all require enormous capital. A developed capital market supplies funds to companies with high growth potential, and those companies in turn generate innovation and build new industrial ecosystems.
The United States grew into the world's largest economy not on military power and the dollar alone. Behind it stood a powerful capital market that raised Apple and Microsoft, Nvidia and Amazon. Korea, too, must build a virtuous cycle, centered on Samsung Electronics and SK hynix, in which the capital market and industrial competitiveness reinforce one another.
The current ranking of the world's equity markets makes this trend clearer still. The U.S. market, at $77 trillion, remains the overwhelming leader. Mainland China is second at $15.3 trillion, Japan third at $8.3 trillion and Hong Kong fourth at $7.5 trillion. Taiwan stands at $4.95 trillion, India at $4.92 trillion and Korea at $4.81 trillion, placing it around seventh in the world. Canada follows at $4.5 trillion, the United Kingdom at $4 trillion and France in the $3 trillion to $4 trillion range. This ranking is not a mere competition of numbers. It is the front line of the twenty-first century's economic war.
The world does not wage military wars alone. Economic war is fierce as well. Which nation's companies can raise greater capital, which nation's market can grow future industries faster, which nation's household assets move in a more productive direction — these determine a country's fate. In that light, Korea's rise to seventh in the world is no small achievement. Should the KOSPI reach around 8,500, the Korean market would rise to roughly the $5 trillion range and could contest fifth through seventh place with Taiwan and India; at around 10,000, roughly $5.5 trillion to $6 trillion, a foothold in the global top five becomes possible; and at around 11,000, roughly $6 trillion to $7 trillion, it could vie with Hong Kong for fourth or fifth. The markets of Taiwan, India and Hong Kong may grow in tandem, so the actual ranking could shift in relative terms. But the direction is clear: the possibility is opening for the Korean market to leap from a peripheral market to a capital market that can look toward the world's top five.
This matters because the development of a securities market directly affects economic growth. As a market grows, companies raise capital, and that capital flows into research and development, capital expenditure, mergers and overseas expansion — which in turn raises productivity and competitiveness and enlarges the growth potential of the national economy. Innovative industries in particular struggle to grow without a capital market. AI, semiconductors, biotechnology and aerospace all require long-term investment and large-scale capital. Bank lending alone cannot raise such industries; they require venture capital willing to bear the uncertainty of the future, long-term investment capital and the participation of global institutional investors. This is precisely why the United States became the center of world innovation. The Nasdaq was not a mere exchange but the cradle of America's innovative industries. For Korea to become a genuine AI-semiconductor power, the KOSPI and KOSDAQ, too, must become not mere price boards but capital platforms that raise future industries.
The development of a securities market also affects the growth of household assets and the expansion of consumption. A rising market increases the financial assets of the public; as assets grow, the capacity for consumption and investment expands and economic activity quickens. This is the so-called wealth effect. Excessive wealth effects can, of course, create bubbles and inequality. But healthy capital-market growth becomes an important channel for sharing the fruits of corporate growth with the public.
In Korea's case, the fact that Samsung Electronics has roughly five million individual shareholders is highly symbolic. Close to one in ten citizens is a Samsung shareholder, and counting family members, a very broad swath of Korean society is connected, directly or indirectly, to Samsung Electronics. Adding the National Pension Service, retirement pensions, exchange-traded funds, mutual funds and individual investors' assets, the earnings and share prices of Samsung Electronics and SK hynix are not a matter for the companies alone but a matter of the national economy and national wealth. For Samsung Electronics and SK hynix to grow stronger is not merely for conglomerates to grow stronger; it is connected to the returns of the national pension, the returns of retirement pensions, the assets of individual investors, national tax revenue, jobs for the young and the research-and-development ecosystem.
The weight of Samsung Electronics and SK hynix in the Korean economy is already overwhelming. Samsung Electronics' market value stands at about 1,850 trillion won and SK hynix's at about 1,340 trillion won, for a combined value of roughly 3,190 trillion won — about 45 percent of the entire value of the Korean market, with Samsung at about 26.1 percent and SK hynix at about 18.9 percent. By 2025 earnings, Samsung earned about 45 trillion won and SK hynix about 43 trillion won, for combined profit of roughly 88 trillion won, equal to about 45.2 percent of the total profit of all listed Korean companies. Put simply, of every 100 won earned by listed Korean firms, about 45 won came from Samsung Electronics and SK hynix. For 2026, some aggressive forecasts even raise the possibility of combined operating profit on the order of 500 trillion won — Samsung at about 320 trillion won and SK hynix at about 180 trillion won — driven by the AI and HBM super-cycle. Were these figures realized, the Korean economy and capital market would enter an entirely new phase. Yet it is precisely because of that overwhelming weight that Korea bears opportunity and risk at once. The two companies have become both the heart of the Korean economy and its single greatest concentration risk.
The same is true of Taiwan's TSMC. With a market value of about $2 trillion and a roughly 35 to 40 percent share of the Taiwan market, TSMC is an absolute company. It manufactures the advanced chips of the world's major AI firms — Nvidia, AMD, Apple, Broadcom and Qualcomm. Taiwan's exports and trade balance, its growth rate, its exchange rate and its entire market are directly affected by TSMC's results. TSMC is a private company, yet Taiwan's government-affiliated National Development Fund is known to hold a stake of about 6 percent as a major shareholder — meaning TSMC is more than a private firm; it is a national champion that the Taiwanese government strategically cultivates and supports.
Korea's Samsung Electronics and SK hynix, and Taiwan's TSMC, are none of them mere companies. They are core national strategic assets that govern each nation's exports, employment, pensions, household wealth and equity market. But the roles of Korea and Taiwan differ. Samsung Electronics and SK hynix handle memory chips; TSMC handles foundry. Samsung and SK hynix supply HBM and DRAM, taking charge of AI's memory, while TSMC produces GPUs and AI chips, taking charge of producing AI's brain. Put simply, TSMC makes the brain of AI, and Samsung and SK hynix supply its memory. By market value, too, the combined roughly 3,190 trillion won of Samsung and SK hynix is comparable to TSMC's roughly $2 trillion, or about 3,000 trillion won. In market weight, Samsung and SK hynix account for about 45 percent of the Korean market and TSMC for about 35 to 40 percent of Taiwan's. In share of listed-company profit, Samsung and SK hynix hold about 45 percent, while TSMC likewise holds an overwhelming share among Taiwanese firms. In Korea, the National Pension Service holds about 7 to 8 percent of Samsung and about 7 percent of SK hynix as a key institutional shareholder; in Taiwan, government-affiliated funds participate as major shareholders of TSMC. Samsung is a "people's stock" with some five million individual shareholders, and TSMC, too, is Taiwan's representative people's stock. In the end, Korea and Taiwan each underpin the foundation of the AI-era global digital economy through their strategic firms.
The most important point to watch here is the profit structure. In corporate value — market capitalization — the TSMC and Samsung–SK hynix camps have risen to comparable scale. But should the AI memory super-cycle materialize, the 2026 profit of the Samsung–SK hynix camp, at a maximum of roughly 500 trillion won, could far exceed TSMC's projected maximum of about 180 trillion won — and that is the core of what the market is watching. Were this realized, the world's capital markets would have no choice but to reassess Korea's memory-chip industry entirely. If TSMC has until now been recognized as the AI era's absolute strategic company, Samsung Electronics and SK hynix would henceforth be recognized as another absolute axis of the AI era — because the market is confirming that AI's memory matters as much as AI's brain.
Yet all these numbers tell us not of a simple rosy future. They demand, rather, a higher level of sobriety. That about 45 percent of the entire value of the Korean market, and about 45.2 percent of listed-company profit, is concentrated in Samsung Electronics and SK hynix is both a blessing and a danger. When a national economy depends excessively on a particular industry and particular companies, that industry's cycle shakes the fate of the entire country. In a chip boom, household wealth grows, tax revenue expands and national credibility rises; but in a chip downturn, the market and the currency, exports and investment, employment and consumption can all be shaken at once. This is the danger of what might be called "semiconductor disease." Just as the Netherlands once suffered "Dutch disease," in which a natural-gas boom weakened its manufacturing competitiveness, Korea must guard against a semiconductor disease in which a chip super-boom drives policy judgment, industrial structure, the capital market and public sentiment too far in a single direction.
A boom always clouds the eye. The world is now enraptured by the AI-semiconductor super-cycle. But the history of the technology industry has always been one of cycles. In the 1980s, Japanese semiconductors dominated the world, and the United States trembled at the fear of them. Yet amid the collapse of the bubble, structural change and U.S. technological and trade pressure, Japanese semiconductors faltered abruptly. So it was with the dot-com bubble, with LCDs, and with the solar and battery industries, all of which passed through vast cycles.
AI, too, guarantees no eternal straight-line growth. Oversupply may someday arrive, price competition may intensify, technical standards may shift, and China's pursuit may prove faster than expected. China is already pouring enormous funds into AI chips and the memory industry, waging an all-out effort to build its own semiconductor ecosystem even under U.S. technology sanctions. A technological gap still exists, but the most dangerous thing in industrial competition is to underestimate a rival's speed of pursuit. Japan once pursued the United States, Korea pursued Japan, and now China is pursuing Korea and Taiwan.
What Korea must do now, therefore, is not self-congratulation but design. That Samsung Electronics and SK hynix have entered the world's trillion-dollar club does not automatically guarantee the future. That the possibility of a KOSPI at 8,500, 10,000 or 11,000 is being raised does not mean the Korean capital market will advance of its own accord. For strong companies to make a strong market, and a strong market in turn to make a strong economy, there must lie between them trust and institutions, transparency and long-term capital, an innovation ecosystem and industrial diversification.
Companies must not grow drunk on short-term results but invest in next-generation technology and energy, software and platforms, data and talent. Government must focus not on political slogans but on capital-market advancement and regulatory innovation, tax reform and the cultivation of a long-term investment culture. Labor must consider not only the distribution of present gains but also future competitiveness and the sustainability of industry. Investors must read not short-term swings but the structural transformation of national industry.
For the Korean capital market to challenge for fifth, and further fourth, place from seventh carries meaning beyond a simple rise in share prices. It is an indicator that the competitiveness and future growth potential of Korea's capital market are expanding, and over the long term it can become a foundation on which companies, citizens and the nation grow together.
That challenge, however, cannot be completed by Samsung Electronics and SK hynix alone. Korea must make semiconductors its central axis while building a broader industrial ecosystem connecting AI software and cloud, robotics and biotechnology, aerospace and defense AI, cultural content and digital finance. For the true winner of the AI era is likely to be not simply the country that makes chips well, but the country that designs the whole of AI civilization.
The United States is strong not because of Nvidia alone. As Alphabet at $4.6 trillion, Apple at $4.5 trillion, Microsoft at $3.1 trillion, Amazon at $2.9 trillion, Tesla at $1.5 trillion and Meta at $1.5 trillion attest, the United States holds platforms and software, cloud and data, electric vehicles and an AI ecosystem all at once. Korea, too, must grow beyond the overwhelming memory devices of Samsung Electronics and SK hynix to cultivate AI platforms and software, data centers and power, robotics and defense AI together.
National competitiveness in the twenty-first century is not determined by military power and manufacturing alone. The size and quality of the capital market, semiconductors and AI, data and energy, platforms and supply chains together now govern a nation's fate. The $77 trillion of the U.S. market is not a mere number but America's power to absorb and allocate the world's innovative capital. The rankings — mainland China at $15.3 trillion, Japan at $8.3 trillion, Hong Kong at $7.5 trillion, Taiwan at $4.95 trillion, India at $4.92 trillion, Korea at $4.81 trillion — are the present front line of the global economic war. For Korea to rise further in this competition, a rise in corporate value alone is not enough. It must build a market that foreign investors can trust, a market in which the national and retirement pensions can grow over the long term, a market in which individual investors can fairly share the fruits of corporate growth, and a market in which innovative companies can raise capital and venture out into the world.
In the end, the meaning of May 27, 2026, is clear. On this day, the world's markets formally confirmed that the winners of the AI era are the memory-chip companies. The three memory makers entered the trillion-dollar club at once, and Korea became the second nation after the United States to hold two trillion-dollar companies. Samsung Electronics surpassed 2,000 trillion won counting common and preferred shares, the combined value of Samsung and SK hynix reached about 3,190 trillion won, or about 45 percent of the entire Korean market, and the two firms accounted for about 45.2 percent of listed-company profit in 2025 — with some forecasts raising the possibility of combined operating profit of as much as 500 trillion won in 2026.
Taiwan's TSMC, at about $2 trillion and 35 to 40 percent of the Taiwan market, takes charge of producing AI's brain. Korea's Samsung Electronics and SK hynix take charge of AI's memory. TSMC and the Samsung–SK hynix pair are each the heart of their nation's economy and the most important strategic firms moving the AI-era world economy.
But the real history begins now. Numbers speak of possibility, but strategy makes the future. Market capitalization shows present expectation, but a nation's dignity rests on how it connects that expectation to institutions, industry and household wealth. Korea now stands before the door of a boom — and at the same time before the door of risk. In comfort, think of danger — geo-an-sa-wi (居安思危).
The AI-semiconductor jackpot is a blessing, but the moment that blessing becomes arrogance, crisis begins. Korea must connect strong companies to a strong market, a strong market to a strong economy, and a strong economy back to strong household wealth and future industries. That, precisely, is the path the Republic of Korea must walk in the age of AI.
Semiconductors are the heart of the Republic of Korea. But the Republic of Korea must not become a nation of semiconductors alone. It must build a new national strategy that connects, with semiconductors at the center, AI and energy, the capital market and data, platforms and culture, robotics and biotechnology, defense and space. Only then will May 27, 2026, be recorded not as a day of mere share-price gains, but as the day the Republic of Korea began its leap toward becoming an AI-civilization nation.
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