Nikkei Edges Lower as 10-Year Yield Hits 3%

The Nikkei opened sharply lower after U.S. stocks fell overnight on higher oil prices and rising interest-rate expectations. The index began at 65,885.47, down 426.46 points, and slid as low as 65,576.61 in early trading before recovering steadily. It briefly turned positive during the session but lacked enough momentum to hold gains into the close.

The TOPIX again showed greater resilience than the Nikkei, rising to 4,181.86 and extending its winning streak to nine sessions. The contrast showed that investors continued to rotate away from some high-priced artificial intelligence and semiconductor shares and into value-oriented sectors such as utilities, energy, trading houses and banks.

Prime Market trading value totaled 7.5016 trillion yen, with volume of 2.27826 billion shares. Gainers numbered 845, or 54% of the market, while 662 stocks fell and 49 were unchanged. The breadth confirmed that the broader market remained firmer than the Nikkei’s negative close suggested.

The main domestic event was the bond market. Japan’s benchmark 10-year government bond yield briefly reached 3% for the first time since September 1996, marking a major psychological shift after decades of ultra-low interest rates.

The yield later eased slightly to around 2.995% after a 10-year JGB auction drew firm demand, but the move to 3% still sent a clear signal to equity investors, households, banks and policymakers. The 10-year yield is a benchmark for mortgages, corporate borrowing and government debt-servicing costs.

The rise in yields reflected several pressures at once: persistent inflation, the yen’s weakness near 160 to the dollar, expectations that the Bank of Japan will raise rates again soon, and concern over Japan’s fiscal position as ministries submit large budget requests for the next fiscal year.

Reuters reported that the five-year JGB yield reached a record high of 2.265%, while the two-year yield climbed to a 31-year high of 1.795%. Those moves showed that markets are pricing in a near certainty that the BOJ will raise its policy rate at its September 17-18 meeting.

The BOJ kept its policy rate at 1% at its July 30-31 meeting, but board member Hajime Takata dissented in favor of a hike to 1.25%. Since then, stronger inflation data, high producer prices, the weak yen and rising global yields have increased pressure on the central bank to tighten again.

For equities, higher yields create a difficult environment. They raise the return investors demand from stocks, increase the discount rate applied to future earnings and put pressure on growth shares whose valuations depend heavily on profits expected several years ahead.

That pressure was visible in AI and semiconductor-related shares. Reuters said Tokyo Electron and Advantest fell, while Kioxia Holdings rose. The mixed performance showed that investors are no longer buying the AI trade as one broad theme. They are distinguishing between companies with strong order visibility, those tied to speculative positioning and those vulnerable to valuation pressure.

Tokyo Electron and Advantest remain two of Japan’s most important semiconductor-equipment and chip-testing names. Both have benefited from the global AI investment cycle, but both are sensitive to rising interest rates and any doubt over whether current valuations already reflect years of strong demand.

Kioxia’s rise helped stabilize sentiment toward memory-related shares. The company remains one of Tokyo’s key gauges of confidence in high-bandwidth memory, AI servers and data-center demand, but its share price has been highly volatile through August and early September.

SoftBank Group also remained closely watched because of its large Nikkei weighting and its role as a proxy for global AI investment sentiment. Investors continue to weigh the company’s exposure to OpenAI, robotics and digital infrastructure against the funding demands and debt risks linked to its strategy.

The broader AI complex remains vulnerable to U.S. interest-rate expectations. Federal Reserve Chair Kevin Warsh’s Jackson Hole comments continued to affect markets after he emphasized inflation risks and left investors with the impression that U.S. financial conditions may not be restrictive enough.

That message pushed up U.S. yields and weighed on high-growth technology shares. For Japan, the impact comes through several channels: weaker U.S. tech sentiment hurts Japanese chip stocks, higher U.S. yields support the dollar, and a stronger dollar keeps pressure on the yen.

The yen traded around 159.80 to the dollar in Asia, close to the 160 level that has repeatedly raised speculation over intervention. The currency remains stronger than its late-July lows near 164, but its failure to recover more decisively has kept policymakers under pressure.

Finance Minister Satsuki Katayama said after meeting U.S. Treasury Secretary Scott Bessent at the G20 finance leaders’ gathering in Asheville, North Carolina, that Japan and the United States had agreed to continue coordinating to achieve orderly yen moves.

Katayama said there was no change in Japan’s position of standing ready to act if currency moves became disorderly. The meeting was the first face-to-face discussion between Katayama and Bessent since last month’s rare coordinated yen-buying intervention.

The joint intervention briefly strengthened the yen, but it did not create a lasting floor. That has shifted market attention back to the BOJ, with many investors concluding that rate increases may be a more durable tool than repeated intervention.

Katayama declined to comment directly on whether the yen’s move near 160 was orderly, while Bessent had earlier described recent yen moves as fairly contained. That difference matters because another joint intervention would likely require a stronger shared view that currency trading had become disorderly.

The weak yen remains a double-edged force for Japanese equities. It supports exporters by raising the yen value of overseas earnings, but it increases the cost of imported energy, food, raw materials, chemicals and consumer goods.

For households, the yen is an inflation issue. A currency near 160 raises pressure on groceries, gasoline, electricity, transport and imported daily goods. Even with wage growth improving, consumers remain sensitive to price increases because real purchasing power is still fragile.

That household pressure is one reason markets are watching the government’s fiscal plans closely. The Finance Ministry is dealing with rising debt-servicing costs just as ministries and agencies submit budget requests expected to set another record.

Reuters reported that the rise in JGB yields has accelerated in recent days as domestic media reported that Japan’s ministries and agencies likely submitted the largest initial budget request on record for the next fiscal year.

The Finance Ministry has also been considering a sharply higher assumed interest rate for calculating debt-servicing costs. That matters because higher assumed rates immediately increase projected interest payments and reduce room for other spending.

Prime Minister Sanae Takaichi’s administration is trying to balance fiscal discipline with plans to expand investment in strategic areas such as semiconductors and artificial intelligence. The government also faces pressure to support households through food-related relief and possible consumption-tax measures.

Katayama said she explained Japan’s commitment to fiscal discipline at the G20 meeting, including efforts to reduce the debt burden, reform the budget process and fund consumption-tax relief without issuing additional deficit-financing bonds.

The bond market’s message is becoming harder to ignore. Higher yields suggest investors are questioning whether Japan can pursue household relief, defense spending, strategic investment and fiscal consolidation at the same time.

Reuters quoted BNP Asset Management strategist Ryutaro Kimura as saying the bond market had been sounding a warning against fiscal expansion. He also said 3% may attract some demand because it is a psychological threshold, particularly after the strong 10-year auction.

For the stock market, this creates a new balance. Higher rates support banks and insurers, but they pressure high-valuation technology shares and raise concern about government finances. That is one reason TOPIX continues to outperform the Nikkei.

Utilities were among the strongest sectors on September 1, with electric and gas shares rising. Mining, oil and coal-product shares also gained, helped by higher energy prices and investor demand for value and inflation-linked sectors.

Trading houses were also firm, supported by exposure to commodities, energy, resources and global investment. Mitsui, Itochu and Mitsubishi Corp. were among names watched as investors sought companies that can benefit from higher nominal prices and global resource demand.

Banks also held firm, with Mitsubishi UFJ Financial Group and Mizuho Financial Group posting modest gains. Banks remain one of the clearest beneficiaries of BOJ normalization because higher rates can improve lending margins and investment income.

However, the sector is not risk-free. A rapid rise in JGB yields can create valuation losses on bond holdings and increase concern over the broader economy. Investors are therefore buying banks selectively, focusing on earnings power and balance-sheet strength.

Square Enix Holdings rose sharply, helping support individual-stock sentiment. The move showed that company-specific buying remained active even as macro pressure weighed on the Nikkei.

Power companies including Kyushu Electric Power and Tokyo Electric Power Holdings also gained. Their strength reflected investor interest in sectors with domestic earnings drivers and potential benefits from electricity demand, pricing and energy-policy themes.

On the weaker side, service shares, nonferrous metals and retail stocks lagged among the 33 Tokyo Stock Exchange industry groups. The Growth Market 250 Index also fell 1.47% to 800.09, extending weakness in smaller growth shares.

The decline in Growth 250 contrasted with the strength seen late last week, when speculation over TOPIX reform and possible index inclusion had supported selected smaller stocks. On September 1, rising rates and caution toward growth shares outweighed those hopes.

The market’s broader structure remains important. Investors are not abandoning Japanese equities, but they are changing what they want to own. The shift is away from crowded AI and expensive growth names and toward companies with value characteristics, rate benefits, defensive earnings, energy exposure or capital-efficiency stories.

This rotation has been visible since late August. TOPIX has climbed steadily even when the Nikkei has struggled, showing that Japan’s market is no longer being led only by semiconductor equipment, AI infrastructure and SoftBank-linked themes.

Still, the AI trade remains central to the Nikkei’s direction because of the index’s structure. Advantest, Tokyo Electron, SoftBank Group, Kioxia, Fujikura, Furukawa Electric and related names can still move the benchmark sharply even when broader market breadth is positive.

The global backdrop remained unsettled. Reuters reported that the Middle East crisis continued to stoke inflation fears globally, pushing yields higher across major bond markets. U.S., German and French yields also rose, showing that Japan’s bond selloff is part of a wider global adjustment.

Oil prices remained a risk. Brent crude was around the low-$90 range, while U.S. crude also rose as renewed fighting in the Middle East raised concern over supply and shipping routes. For Japan, higher oil is a direct inflation risk because the country imports most of its energy.

Oil near $90 to $92 raises costs for gasoline, electricity, aviation fuel, logistics, chemicals and manufacturing. The impact is amplified when the yen is near 160 because energy imports are priced largely in dollars.

That combination of weak yen and high oil is difficult for households and import-dependent companies. It also complicates the BOJ’s inflation analysis because some price pressure comes from external costs rather than domestic demand.

Japan’s recent inflation indicators remain firm. Tokyo core CPI rose 1.8% in August, while the index excluding fresh food and fuel reached 2.0%. Producer prices also remain elevated, suggesting that companies are still facing strong cost pressure.

The BOJ is watching whether those costs are being passed through to consumers and whether wage growth is strong enough to support demand. If inflation expectations rise too far, the central bank may feel it must move faster even if household spending remains uneven.

TV Tokyo’s broader business themes remain closely tied to this market. Companies are still deciding how much of higher labor, energy, logistics and materials costs can be passed on to consumers, while households judge the economy by whether wage increases cover daily expenses.

Businesses with pricing power, stable demand, strong brands or exposure to long-term investment remain better positioned. Firms without pricing power face margin pressure if the yen stays weak and oil prices remain high.

Japan’s July data released the previous day gave a mixed picture. Industrial output rose only 0.1% from June, while retail sales rose 4.0% from a year earlier. The figures suggested manufacturing momentum was modest but consumption may be stabilizing with help from wages and subsidies.

The September 1 market treated those data as secondary to yields and currency policy. Even decent corporate earnings and resilient retail sales are not enough to push the Nikkei higher if bond yields climb, oil rises and AI shares remain under pressure.

What to watch next: whether the Nikkei can hold above 66,000, whether TOPIX can extend its nine-day winning streak, and whether investors continue rotating into value shares, banks, utilities and trading houses.

The 10-year JGB yield around 3% is now the key domestic signal. If it rises clearly above that level, pressure could intensify on equity valuations, mortgages, fiscal policy and the government’s budget process. If it stabilizes near 3%, investors may treat the level as a new equilibrium.

The yen near 160 to the dollar remains another critical marker. A clear move beyond 160 would revive intervention speculation and strengthen expectations for a September BOJ rate hike, while a stronger yen would ease household inflation pressure but reduce support for exporters.

AI and semiconductor shares remain important even in a value-led market. Investors will watch whether Tokyo Electron, Advantest, SoftBank Group, Kioxia, Fujikura and related names stabilize after recent volatility, or whether rising yields keep pressuring growth valuations.

Other key factors will be U.S. jobs data, next week’s U.S. producer and consumer price figures, Brent crude near the low-$90 range, Middle East developments, comments from BOJ Governor Kazuo Ueda and Finance Minister Katayama, and the September 17-18 BOJ meeting.

September 1 showed that Tokyo’s broader market remains resilient, with TOPIX supported by value and rate-sensitive shares, but the Nikkei is still vulnerable when high yields, yen weakness and uneven AI sentiment weigh on its largest technology-related components.