TOKYO - Tokyo stocks slipped on August 27, with the Nikkei 225 closing at 66,131.98, down 130.18 points, as early buying in artificial intelligence and semiconductor-related shares following Nvidia’s strong earnings forecast faded into profit-taking, while the broader TOPIX edged higher for a sixth straight session.
The TOPIX rose 6.20 points to 4,117.22, showing again that the broader market remained firmer than the Nikkei’s high-priced technology-heavy benchmark. Trading volume totaled about 1.96156 billion shares.
The Nikkei began the session sharply higher, rising more than 500 points at the open to 66,775.78 after Nvidia reported stronger-than-expected results and issued a robust sales outlook. The early move reflected relief that the world’s most important AI chipmaker had again confirmed strong demand for artificial intelligence infrastructure.
The rally did not last. After the first round of buying, investors moved to lock in gains in AI-related shares, and the Nikkei gradually lost momentum. By the close, the index had given up its early rise and ended lower for the first time in three sessions.
Nikkei CNBC-style market commentary centered on the gap between strong AI fundamentals and stretched short-term positioning. Nvidia’s numbers reassured investors that demand for AI chips and data-center infrastructure remains firm, but Tokyo’s AI-linked stocks had already rebounded from their late-August lows, leaving them vulnerable to profit-taking.
The broader TOPIX’s gain showed that investors were not abandoning Japanese equities. Instead, money continued to rotate into financials, value shares and selected domestic-demand names while traders became more cautious toward the Nikkei’s more volatile AI heavyweights.
Nvidia forecast roughly 70% revenue growth for the fiscal year ending January 2028, far above market expectations, and said memory-component shortages would continue to limit how quickly it could expand production. That message supported global chip shares by showing that demand remains strong enough to strain supply chains.
For Japan, Nvidia’s outlook was important because it directly affects sentiment toward semiconductor testing, memory, chip equipment, optical fiber, electronic components and data-center infrastructure. Japanese companies are deeply exposed to the AI buildout through multiple stages of the supply chain.
Kioxia Holdings was one of the strongest performers, rising about 5% after Nvidia’s results and reports that the memory-chip maker plans to invest more than 1 trillion yen in a new production building in Iwate Prefecture. The move reinforced investor confidence in high-bandwidth memory, AI servers and storage demand.
Kioxia has become one of Tokyo’s clearest gauges of confidence in the AI hardware cycle. Its shares have been extremely volatile since July, but the August 27 rise showed that investors are still willing to buy companies with direct exposure to data-center and memory demand when the global AI backdrop improves.
Fujikura also rose, supported by demand for optical fiber, cables and high-speed data-center networks. The company remains a major second-wave AI infrastructure name because larger AI facilities require more communications capacity, power systems and advanced wiring.
Tokyo Electron gained in early trading as investors bought semiconductor equipment shares, while other related names also drew initial interest. However, gains in parts of the sector faded as the day progressed, showing that investors are still cautious after several sharp reversals in recent weeks.
Advantest weighed on the Nikkei, falling despite Nvidia’s upbeat outlook. The chip-testing equipment maker is one of the most direct Japanese beneficiaries of advanced AI semiconductor production, but it had already attracted heavy buying and remains highly sensitive to profit-taking because of its large index weighting.
SoftBank Group also weakened, limiting the Nikkei’s performance. The company remains one of Tokyo’s most visible proxies for global AI investment sentiment because of its exposure to OpenAI, robotics, digital infrastructure and large-scale technology themes. Its large weighting means even a modest decline can have a major effect on the Nikkei.
The mixed performance of AI-linked shares showed that the market is becoming more selective. Investors are no longer treating strong Nvidia results as a reason to buy the whole semiconductor complex indiscriminately. They are looking more closely at valuations, earnings visibility, funding needs and whether each company benefits directly from AI demand.
The sector split also reflected concern over supply constraints. Nvidia’s warning that memory-component shortages are limiting production is positive for some memory suppliers and equipment makers, but it also highlights the risk that parts of the AI supply chain may face bottlenecks, margin pressure or uneven order timing.
Outside technology, financial shares remained firm. Banks and insurers continued to benefit from expectations that Japan’s interest-rate environment will gradually normalize. The TOPIX’s resilience was supported by these value-oriented sectors even as the Nikkei slipped.
Financial stocks have become a major alternative to the AI trade. Higher rates can improve lending margins and investment income for banks, while insurers benefit from better returns on invested assets. However, the sector remains sensitive to sudden moves in bond yields and the valuation of financial institutions’ bond portfolios.
The yen traded around 159.29 to the dollar, little changed after comments from Bank of Japan Deputy Governor Ryozo Himino. The currency remained stronger than its late-July lows near 164 but still weak enough to keep imported inflation and intervention risk in focus.
Himino said timely rate hikes would help avoid an inflation spike that could require abrupt tightening later. However, he stopped short of giving a clear signal that the BOJ will raise rates at its September 17-18 meeting.
The market interpreted the remarks as mildly hawkish but not decisive. Traders had been looking for stronger guidance after the BOJ’s July meeting, when board member Hajime Takata dissented in favor of a rate increase to 1.25% and the central bank warned that underlying inflation could exceed its 2% target.
Money-market pricing still points to a high probability of a September rate increase. Investors are watching whether other BOJ officials use speeches before the meeting to prepare markets for another move, especially if the yen weakens again or inflation data remain firm.
Japanese government bonds weakened slightly, with the 10-year yield around 2.869%. The yield remains close to the psychologically important 3% level, which has become a key marker for investors worried about fiscal sustainability, equity valuations and government debt-servicing costs.
The 10-year yield briefly touched 2.90% during the session before easing. BOJ bond purchases helped limit the rise, while Himino’s remarks did not give markets a clear enough signal to push yields sharply higher.
The bond market remains central to the policy outlook. Higher yields increase borrowing costs for the government and private sector, raise the discount rate for equities and make investors more sensitive to fiscal spending plans.
Prime Minister Sanae Takaichi’s administration is pursuing more than 370 trillion yen in public and private investment through fiscal 2040, targeting semiconductors, artificial intelligence, energy security, defense, shipbuilding, robotics, space and other strategic sectors.
The agenda supports many of the sectors leading Japan’s stock market, including semiconductor equipment, data-center infrastructure, materials, power systems and advanced manufacturing. But rising yields have made investors more focused on how the government will fund its plans.
The Finance Ministry is considering using an assumed interest rate of 3.8% for next fiscal year’s budget request, reflecting the pressure that higher JGB yields are placing on public finances. That would be a major change from the ultra-low-rate assumptions that shaped Japan’s fiscal policy for many years.
Household relief remains another fiscal issue. The government is weighing food-related support and other measures to ease the cost of living, but markets remain sensitive to whether these steps are matched by credible revenue plans.
For households, the yen and inflation remain the main concerns. A weak yen raises the cost of imported fuel, food, raw materials and consumer goods. Even with wage growth improving, consumers continue to face higher grocery, electricity, transport and service costs.
TV Tokyo’s broader business themes remain tightly connected to the market story. Companies are still deciding how much of their higher labor, logistics, energy and materials costs can be passed on to consumers, while households are judging the economy by whether pay increases actually cover daily expenses.
Businesses with pricing power, strong brands, recurring demand or exposure to structural investment remain favored by investors. Companies without pricing power remain vulnerable if import costs and wages continue rising.
Japan’s inflation outlook is also being shaped by global energy prices. Brent crude fell to around $86.80 a barrel, on track for a fourth straight daily decline, as Qatar’s prime minister prepared to visit Tehran in an effort to restart U.S.-Iran peace talks.
Lower oil prices are positive for Japan because the country imports most of its energy. A sustained decline would ease pressure on gasoline, electricity, aviation fuel, logistics, chemicals and manufacturing.
However, Middle East uncertainty remains high. Any renewed disruption to the Strait of Hormuz or Red Sea shipping routes could quickly push energy prices higher again and revive the imported inflation shock that unsettled markets earlier in the summer.
The global backdrop was mixed. Nvidia’s forecast lifted technology shares in Asia and Europe, with European tech stocks rising and U.S. futures gaining. South Korea’s Kospi rose after the Bank of Korea raised its policy rate by 25 basis points to 3%, although gains were pared after the decision.
The South Korean market remains important for Tokyo because overseas investors increasingly treat Japanese chip-equipment makers, South Korean memory producers, Taiwanese foundries and U.S. AI shares as one connected technology trade. When Korean memory shares rise, Japanese AI-related stocks often receive support; when they weaken, selling pressure spreads quickly to Tokyo.
U.S. economic data added another layer of uncertainty. The personal consumption expenditure price index rose 0.2% in July from the previous month and 3.7% from a year earlier, keeping alive expectations that the Federal Reserve could still raise rates by year-end.
That matters for Japan because higher U.S. rates support the dollar and make it harder for the yen to recover. A stronger dollar would keep imported inflation pressure on Japan and could increase expectations that the BOJ will raise rates sooner.
Markets are now waiting for the Jackson Hole symposium and comments from Federal Reserve Chair Kevin Warsh. A hawkish message would likely support U.S. yields and the dollar, while a softer tone could ease pressure on the yen and support global equities.
What to watch next: whether the Nikkei can hold above 66,000 after giving up its Nvidia-led early gain, whether TOPIX can continue its steadier advance, and whether investors return to AI-related names after the initial profit-taking.
Kioxia, Fujikura, Tokyo Electron, Advantest and SoftBank Group will remain the key gauges of Japan’s AI trade. The market reaction on August 27 showed that even strong Nvidia results are not enough to lift every related stock if positioning is crowded.
The yen around 159 to the dollar remains a central macro signal. A move beyond 160 would revive intervention speculation and strengthen expectations for a September BOJ rate increase, while a stronger yen would ease household inflation pressure but weigh on exporters.
The 10-year JGB yield near 2.9% will also remain critical. A move above 3% could increase pressure on equity valuations and fiscal policy, while a retreat would help support risk appetite.
Other key factors will be Brent crude near the mid-$80 range, South Korean semiconductor shares, U.S. PCE data, Jackson Hole guidance and BOJ communication before the September meeting. August 27 showed that Japan’s AI trade still has strong fundamental support, but investors are increasingly willing to sell into rallies when valuations, yields and policy risks remain unresolved.
