In February 2026, the Nikkei 225 index repeatedly set new historical records, peaking at 59,332 points, significantly surpassing its 1989 peak. The narrative of "Japan's bull market return" swept through global capital markets. By March, market sentiment shifted sharply, with the index falling nearly 8% over three trading sessions, bottoming at 53,618 points. Concerns about a "stock market crash" and a "repeat of the 1989 bubble" emerged. This sharp decline is not indicative of a bubble burst or the end of the bull market, but rather a clash between short-term pressures and long-term structural logic. To clearly dissect this core contradiction, this analysis will first review the full picture of the recent drop and its short-term drivers, then delve into the underlying reform logic supporting the bull market, Japan's advantageous position in global industries, and interpret the dual impact of foreign capital and exchange rates. It will contrast key differences with the historical bubble period and finally offer an outlook on future market direction, using DuPont analysis to break down corporate profit logic, comprehensively deconstructing the resilience and vulnerabilities of Japan's "reform-driven bull market" to address core market concerns.
The sharp decline was driven by a confluence of four short-term factors. Since the beginning of 2026, the Nikkei 225 had climbed steadily from around 52,000 points, accelerating in mid-February to break through the 55,000 and 58,000 levels. On February 26, it hit a historical peak of 59,332 points intraday, representing a cumulative gain of over 60% from the 2023 low, making it one of the best-performing indices among developed markets globally. In March, the market reversed sharply. A slight decline of 1.35% on March 2nd initiated the pullback, with losses widening to 3.06% and 3.61% on the 3rd and 4th respectively. The three-day cumulative decline approached 8%, marking the largest weekly drawdown in nearly a year, and the index fell below the key 54,000-point level.
An escalation of Middle East geopolitical conflict was the direct trigger. Iran's partial blockade of shipping lanes in the Strait of Hormuz pushed Brent crude oil prices above $90 per barrel. With Japan importing 90% of its crude oil from the Middle East and 73.7% of its crude transport passing through this strait, cost pressures surged for energy-intensive industries. Profit expectations for sectors like automobiles and chemicals were downgraded, igniting the first spark for the market correction.
The发酵 of geopolitical risks further triggered foreign investors to close positions at high levels, significantly amplifying the market decline. By the 2024 fiscal year, the proportion of foreign shareholding had risen to 32.4%, with long-term capital from North American funds and European pensions being the main allocators. However, low participation from domestic Japanese retail investors and weak capacity to absorb selling created inherent volatility risks. In February, weekly net inflows from foreign investors had reached 1.78 trillion yen, highlighting crowded positioning at market highs. Combined with rising geopolitical risks, concentrated profit-taking and programmatic trading exacerbated the downward trend, exposing the structural weakness of the Japanese stock market characterized by "slow rises and fast falls."
Shifting expectations regarding Bank of Japan policy introduced additional disturbances, becoming another significant contributor to the short-term plunge. This policy variable is also closely related to the long-term reform logic of Japan's capital markets. Since 2025, the BOJ has gradually exited its negative interest rate and yield curve control policies, raising the benchmark rate from 0.25% to 0.75%, initiating monetary policy normalization. However, recent public comments from a BOJ deputy governor significantly reduced the perceived probability of a March rate hike. The ambiguity in the policy path led to diverging market views on interest rate direction. Concurrently, the yen lingered at the weak 150-160 level against the US dollar. The marginal benefit to profits from currency depreciation weakened, while pressure from imported inflation became more apparent, further disturbing market valuation logic and directing more attention to the underlying reform momentum supporting the Japanese market's long-term resilience.
Concentrated release of technical correction demand after reaching high levels also played a role. Following the sustained rise, the Nikkei was at a historical high. While valuations were not in bubble territory, they were at the upper end of the reasonable range, with clear overbought signals. In the absence of new positive catalysts, the willingness to take profits increased, making a technical correction inevitable and a rational adjustment to the previous rapid advance. Looking beyond short-term market fluctuations, it is crucial to focus on the core underlying logic supporting Japan's "reform bull market"—the efficiency revolution in corporations driven by the unwinding of cross-shareholdings. This is the key to the market's ability to withstand short-term shocks and possess long-term resilience.
Short-term volatility is ultimately superficial. To understand the resilience of Japan's "reform bull market," one must delve into its core underlying logic: the corporate efficiency revolution brought about by the unwinding of cross-shareholdings. This reform has not only reshaped the operational logic of Japanese companies but also become the fundamental basis supporting long-term stock market gains, serving as the core support distinct from short-term market sentiment swings. Below, we dissect this logic using historical context and DuPont analysis.
Cross-shareholding was a defining feature of the Japanese capital market in the 1980s and a key factor long constraining corporate efficiency and stock market vitality. Its evolution and reform process directly determined the reshaping of Japanese corporate profit logic, thereby underpinning the resilience of the current "reform bull market." Within Japanese corporate groups, banks, manufacturers, and trading companies held shares in each other, forming closed ownership structures. During the bubble economy of the 1980s, this system helped stabilize shareholder bases and resist short-term volatility and hostile takeovers. At that time, cross-shareholding ratios reached around 50%, creating tight利益绑定 between banks and companies, with management largely free from capital market discipline.
As Japan's economy entered a low-growth cycle, the drawbacks of cross-shareholdings became increasingly apparent, turning from a "stabilizer" into a "stumbling block." Vast amounts of capital were tied up in inefficient shareholdings, reducing the incentive for companies to improve capital efficiency. Return on equity languished around 8%, far below Western levels. Management had a weak awareness of shareholder returns, with share buybacks and dividends being minimal, leading to poor market liquidity and prolonged undervaluation. These issues collectively constrained the vitality of the Japanese capital market, forcing reforms to gradually advance.
After the bubble burst in the 1990s, Japan progressively pursued financial reforms, but the unwinding of cross-shareholdings was slow. A new wave of corporate governance reforms starting in 2014-2015, introducing independent directors and higher disclosure requirements, encouraged firms to focus on shareholder returns, accelerating the unwinding process. Post-2022, the Tokyo Stock Exchange's initiative targeting companies with price-to-book ratios below 1x, requiring them to submit capital efficiency improvement plans, forced businesses to divest non-core assets, reduce cross-shareholdings, and increase buybacks and dividends, further driving down cross-shareholding ratios.
After decades of reform, the unwinding of cross-shareholdings has yielded significant results, directly reflected in improved corporate capital efficiency and market value reassessment, forming the most solid fundamental support for the current "reform bull market."
Following these reforms, the cross-shareholding ratio has dropped significantly from around 50% in the 1990s to just over 20% today, with major Japanese banks continuously selling corporate shares, further reducing inefficient holdings. This change has two core impacts: firstly, the proportion of freely traded shares has increased, significantly enhancing liquidity and creating conditions for foreign capital inflow; secondly, corporate management faces greater pressure for shareholder returns, forcing a focus on core businesses and improving capital utilization efficiency.
The structural improvement in corporate return on equity is the most direct manifestation of these reforms. Over the past decade, the ROE of Japanese listed companies has gradually risen from 8% to 12%-14%. The ROE of the MSCI Japan Index is around 12%, a near three-decade high. This improvement stems not from short-term profit fluctuations but from the combined optimization of profit quality, asset operation efficiency, and capital structure—the core embodiment of the corporate efficiency revolution. We further dissect the internal logic of this profit improvement using DuPont analysis.
DuPont analysis breaks down ROE into three core components: net profit margin, asset turnover, and equity multiplier, clearly illustrating the internal logic of Japanese corporate profit improvement. Regarding net profit margin, after the unwinding of cross-shareholdings, companies divested inefficient assets and focused on core operations. Coupled with profit boosts from yen depreciation for exporters and stable demand from upstream AI-related businesses, profit quality has continuously optimized, becoming the core support for ROE growth.
In terms of asset turnover, the TSE's reforms pressured companies to enhance capital use efficiency, reduce idle capital, and channel more funds into core operations and R&D, leading to significant improvements in asset operation efficiency and amplifying profit growth effects. Regarding the equity multiplier, Japanese companies generally have ample cash flow and controllable leverage levels. After years of restructuring, corporate debt profiles have continuously optimized, ensuring operational stability and providing solid support for ROE improvement. The synergistic effect of these three factors has driven a qualitative leap in Japanese corporate profit quality.
Behind the improvement in profit metrics lies a fundamental shift in the development logic of Japanese companies—a comprehensive transition from "scale orientation" to "value orientation." The key drivers of this transformation are precisely the unwinding of cross-shareholdings and the influx of foreign capital.
The current re-rating of Japanese corporate value本质上 represents a shift in development logic from "scale orientation" to "value orientation." During the era dominated by cross-shareholdings, companies prioritized group scale expansion and synergy, neglecting shareholder returns and capital efficiency. As cross-shareholdings unwound and foreign capital flowed in, the focus of foreign investors on profit quality, shareholder returns, and capital efficiency pressured management to adjust their strategies.
Automotive leaders like Toyota and Honda no longer solely pursue market share but instead enhance profit quality by optimizing supply chains, increasing product value-added, and boosting R&D in hybrid and electric vehicles, while significantly increasing buybacks and dividends. Semiconductor equipment firms like Tokyo Electron and Shin-Etsu Chemical focus on core technology R&D, consolidating global market share, with显著提升 in profit stability and growth, making them core holdings for foreign investors and demonstrating the effectiveness of the transformation.
Beyond the internal corporate efficiency revolution, the resilience of Japan's "reform bull market" also stems from its unique positioning in the global industrial chain. Amid the AI industry wave, Japan has not followed hype around application narratives but has leveraged its deep manufacturing积累 to firmly occupy upstream core segments, forming an irreplaceable competitive advantage. This serves as another crucial pillar supporting long-term stock market gains.
While global attention focuses on AI large models and end applications, Japan,凭借 its deep manufacturing积累 and technological strengths,牢牢占据 core upstream segments of the AI产业链, becoming the veritable "water seller" of the AI era. In semiconductor equipment, Japanese companies hold about half of the global market. Firms like Tokyo Electron and Screen Holdings command over 70% market share in key equipment areas like coating/developing, cleaning, and precision dicing, directly supporting AI chip production. In photoresists, Shin-Etsu Chemical and Tokyo Ohka Kogyo hold over 80% market share, with a near-monopoly on high-end photoresists, which are indispensable core materials for AI chip manufacturing and difficult to replace in the short term.
Furthermore, in upstream niche areas like high-purity chemical precursors and precision components, Japanese companies also possess absolute technological advantages, forming a comprehensive layout. This positioning contrasts sharply with the US focus on applications and China's focus on end applications, allowing Japan to occupy "chokepoint" segments critical to the global AI industry.
The monopolistic-level positioning of Japanese companies in the AI upstream not only grants them产业链话语权 but also creates a robust and sustainable profit logic. This is a key reason why the Japanese stock market differs from US tech stocks and possesses greater resilience—its rise relies not on概念炒作 but on profit support from essential businesses.
The rise of the Japanese stock market is not dependent on AI narrative speculation but on stable profit growth anchored in the essential advantages of upstream segments, a core distinction from US tech stocks. AI application layers face fierce competition and rapid technological iteration, leading to higher profit volatility. In contrast, upstream core materials and equipment are essential for AI industry development, with stable demand and strong profit certainty, largely insulated from short-term fluctuations in applications.
As a semiconductor equipment leader, Tokyo Electron's core business focuses on AI wafer fabrication equipment. Its net profit for FY2025 grew 35% year-on-year, with ROE rising to 18%, demonstrating极强的盈利稳定性. Shin-Etsu Chemical benefited from rising AI chip demand, with photoresist business revenue growing 28% year-on-year, becoming a core profit driver, highlighting the profit resilience of upstream AI businesses.
This deep-rooted positioning in the AI upstream grants Japan an irreplaceable role in the global industrial division of labor. This unique status, in turn, attracts allocations from global long-term capital, forming a virtuous cycle of "industrial advantage → stable profits → capital inflows," injecting sustained momentum into the Japanese bull market.
Japan's卡位 in the AI upstream makes it an indispensable infrastructure provider for the global AI industry, possessing not only profit value but also significant产业链话语权. Regardless of how AI models or end applications evolve, they rely on the support of upstream core materials and equipment. With their technological and monopolistic advantages, Japanese companies have become essential partners for the global AI industry, with market shares difficult to replace in the short term.
This unique positioning makes the Japanese stock market an important choice for global capital seeking diversification. In an environment where global funds seek "stable profits + risk diversification," the stable profits and irreplaceable advantages of Japan's upstream core companies attract substantial allocations from North American funds, European pensions, and other long-term capital, further supporting stock market gains and serving as a major booster for the bull market.
The internal efficiency revolution and global industrial positioning form the core resilience of Japan's "reform bull market." However, external factors like capital structure and exchange rate fluctuations act both as crucial supports for the bull market and sources of non-negligible vulnerability, collectively influencing short-term volatility and long-term direction.
Foreign capital is the primary driver of the current Japanese bull market. By FY2024, foreign shareholding比例 rose to 32.4%, far exceeding holdings by domestic institutions and individuals. North American funds, European pensions, and sovereign wealth funds are the main allocators. The core logic for foreign inflows stems from value reassessment driven by corporate governance reforms, global asset rebalancing needs, and exchange rate gains from yen depreciation. These three factors jointly propelled sustained foreign inflows, supporting valuation expansion.
However, this capital structure has clear vulnerabilities. Domestic Japanese retail participation in the stock market is low, lacking long-term allocation capital and the capacity to absorb selling. Foreign investment behavior is highly influenced by global risk appetite; a downturn in US stocks or an escalation of geopolitical conflicts can trigger concentrated withdrawals, as directly seen in the recent sharp decline. Unlike the 1989 bubble period, the current capital is primarily long-term配置 oriented, with controllable leverage and no nationwide speculative frenzy. However, market sensitivity to volatility has显著提升.
Closely intertwined with the foreign-dominated capital structure is the fluctuation of the yen exchange rate. This variable acts as a "double-edged sword," bringing benefits to Japanese corporate profits and stock market gains while also harboring potential risks, becoming an important factor affecting market sentiment.
The yen exchange rate is a core variable influencing the Japanese stock market; this bull market is本质上 also a "currency depreciation bull." As an export-oriented economy, the profits of key sectors are highly dependent on overseas markets. Yen depreciation directly increases the yen-denominated value of overseas revenue and enhances the price competitiveness of exported goods, boosting order growth. Data shows that for every 1 yen depreciation against the US dollar, Toyota's annual net profit increases by approximately 40 billion yen. Leaders like Tokyo Electron and Sony also benefit significantly. Since 2023, the USD/JPY rate rose from 130 to the 150-160 range. The depreciation红利 pushed listed company net profits to record highs, becoming a major driver of the stock market rally.
But yen depreciation is a double-edged sword. On one hand, the marginal effect of the depreciation红利 diminishes as overseas production ratios increase and the use of foreign exchange hedging tools weakens the profit boost from汇率. On the other hand, excessive depreciation triggers imported inflation, raising import costs and squeezing profit margins. It may also pressure the central bank to accelerate interest rate hikes, further disturbing market sentiment. The recent pullback included concerns about weakening currency benefits and rate hike expectations.
It is important to recognize that foreign capital and the yen exchange rate do not exist in isolation but interact, creating a resonance effect. This effect positively reinforces the uptrend during a bull market but can amplify declines during a correction. The recent sharp drop in the Nikkei is a集中体现 of this negative resonance. Yen depreciation boosts profits, attracting foreign inflows; foreign inflows increase the supply of yen, further pushing depreciation, forming a positive feedback loop that supports stock gains. However, this闭环 also makes the market extremely sensitive to capital and exchange rate fluctuations; any change in core variables can trigger negative共振.
The recent急跌 is a集中体现 of negative共振. Escalating Middle East geopolitical conflict reduced global risk appetite, prompting foreign outflows and pushing the index down. The stock market decline weakened expectations for further yen depreciation, further exacerbating foreign capital flight, forming a negative cycle of "geopolitical risk → foreign outflow → stock decline → weakened yen depreciation expectations,"放大 the adjustment幅度. Crucially, the core of the loop remains corporate profit improvement and value reassessment. If profits continue to rise, even short-term foreign outflows are unlikely to cause a systemic market decline.
Fears of a "bubble replay" triggered by the short-term急跌本质上 reflect a misunderstanding of the current drivers of the Japanese stock market. Combining the analysis of internal resilience and external variables, we can comprehensively compare the current market with the 1989 bubble economy period to clearly dissect their essential differences and dispel market panic.
The core driver of the 1989 Japanese stock market rise was bubble speculation, reliant on a real estate bubble, uncontrolled bank lending, and nationwide leveraged speculation. Stock gains were completely detached from fundamentals, driven solely by capital and sentiment, lacking profit support. In contrast, the core driving force of the 2026 bull market is an efficiency revolution,依托于 corporate governance reforms and capital efficiency improvements from unwinding cross-shareholdings, a unique卡位 in the AI upstream, and共振 from global capital reallocation. The core support is sustained corporate profit improvement and value reassessment, fundamentally different from the 1989 bubble speculation and possessing long-term sustainability.
The difference in driving logic is directly reflected in valuation levels—whether valuation aligns with profits is the core criterion for judging a market bubble, and this is one of the most直观的区别 between 2026 and 1989.
Beyond driving logic and valuation, the health of the capital structure and financial system is even more critical in determining whether the market will repeat the bubble burst. A comparison on this dimension further confirms the robustness of the current Japanese stock market.
The 1989 capital structure was dominated by domestic leveraged funds. Bank lending encouraged companies and individuals to leverage into the market, resulting in extremely high leverage and a nationwide speculative frenzy, creating a fragile capital structure. Once banks tightened lending, it triggered capital flight and a market crash. The current capital is primarily foreign配置 capital, with controllable leverage and no nationwide speculation. Regarding financial risk, the Japanese financial system in 1989 was高危, with banks heavily lending to real estate firms. After the bubble burst, non-performing loan ratios soared, pushing the financial system toward collapse. The current financial system, after years of restructuring, maintains strict risk controls. The proportion of real estate loans is far lower than in the 1990s, with NPL ratios below 1%. Corporate cash flow is ample, leverage is controllable, and the unwinding of cross-shareholdings has reduced interconnected risks within the system, indicating no systemic financial risk.
In summary, the 2026 Japanese stock market differs fundamentally from the 1989 bubble economy across four dimensions: driving logic, valuation levels, capital structure, and financial risk. The recent急跌 is merely a short-term adjustment in a high market, resulting from a共振 of short-term pressures, not a bubble burst. The long-term logic supporting the bull market remains unchanged.
In conclusion, based on the comprehensive analysis of market performance, underlying logic, global positioning, external variables, and historical comparison, we can clearly conclude: the recent nearly 8% three-day drop in the Nikkei index is not a repeat of the 1989 bubble burst, nor is it the end of the bull market. It is a stress test for a high market, the result of a共振 of multiple short-term factors.
This pullback serves both as a rational correction to the previous overly rapid advance and an opportunity to筛选 high-quality companies. Firms with core technological advantages, high ROE, high dividends, and stable profits will stand out during the volatility. The Japanese capital market is undergoing a profound transformation from "stability priority" to "efficiency priority," and from "local closure" to "global openness." This process will inevitably be accompanied by波动, but this is characteristic of a mature bull market—possessing both resilience and vulnerability; experiencing both short-term fluctuations and long-term trends. Looking ahead, the key focuses for the Japanese stock market are the continued推进 of reforms, the consolidation of its upstream AI advantage, and the persistence of global capital allocation logic. When this efficiency revolution is fully realized, the Japanese stock market may truly emerge from decades of stagnation and usher in a sustainable structural bull market.