TOKYO - Tokyo stocks ended nearly unchanged on August 12, with the Nikkei 225 at 66,988.82, as gains in energy and financial shares offset weakness in electronics and pharmaceuticals while investors weighed higher crude oil prices, a weaker yen and growing expectations for another Bank of Japan rate increase.
The broader market held firm after the Mountain Day holiday, supported by buying in banks, insurers, energy and other value-oriented shares. The session showed that investors remained willing to hold Japanese equities, but were more cautious about pushing the Nikkei decisively above 67,000 after the sharp rebound earlier in the month.
The Nikkei was supported by energy and financial stocks, but the index’s advance was limited by weakness in selected electronics, automation and drugmaker shares. The mixed finish followed a strong August 10 session, when Tokyo rallied on expectations that softer U.S. labor data could reduce pressure from American interest rates and support global risk appetite.
Market commentary focused on the tug-of-war between three forces: renewed strength in Asian technology shares, rising geopolitical risk in oil markets, and the yen’s slide back toward 160 to the dollar after last week’s suspected coordinated yen-buying intervention.
The Nikkei has recovered substantially from the late-July selloff, but the market is no longer moving as one broad AI trade. Investors are becoming more selective, buying companies with clearer earnings support, stronger pricing power or exposure to financial normalization, while selling names where valuations have become demanding or earnings momentum appears less certain.
South Korea’s Kospi surged about 4%, led by gains in Samsung Electronics and SK Hynix, giving some support to the regional semiconductor complex. That helped sentiment toward Japanese chip-related shares, but Tokyo’s own technology names did not move uniformly higher. Investors remain cautious after weeks of extreme volatility in Kioxia, Tokyo Electron, Advantest, Fujikura, SoftBank Group and other AI-linked heavyweights.
The market’s relationship with South Korea remains important. Overseas investors increasingly treat Japanese chip-equipment makers, South Korean memory producers and U.S. AI-related shares as parts of the same investment theme. When Seoul rallies, Tokyo often receives support; when Korean memory shares fall, Japanese semiconductor names quickly come under pressure.
Resona Holdings rose 2.8%, helping support the financial sector. Banks have benefited from expectations that Japan’s interest-rate environment will continue to normalize after the BOJ kept its policy rate at 1% on July 31 but delivered a more hawkish message than the headline decision suggested.
Financial shares remain tied to the outlook for BOJ policy. Higher interest rates can improve lending margins and investment income for banks, but a rapid rise in bond yields can also create valuation losses and raise concern about the broader economy. Investors are therefore buying the sector selectively rather than treating rate increases as an automatic positive.
Inpex rose 3.9% as crude oil prices advanced on renewed geopolitical tensions. Energy shares benefited from the rise in oil, but the same move raised concern for the broader economy because Japan imports most of its energy.
Electronics and pharmaceuticals weighed on the Nikkei. Omron fell 3.1%, while Daiichi Sankyo dropped 2.2%. Their declines showed that investors remain willing to sell individual companies when earnings momentum, guidance or valuation become less convincing, even during a generally resilient market.
The weakness in electronics also reflected caution toward companies linked to factory automation and global capital spending. Demand from AI and data-center investment remains strong in some areas, but investors are differentiating more sharply between firms that directly benefit from semiconductor and infrastructure spending and those more exposed to broader industrial cycles.
Daiichi Sankyo’s decline weighed on the pharmaceutical sector. Defensive drugmakers had attracted buying during earlier periods of technology volatility, but investors have become more selective after the broader market recovered and money rotated back toward banks, energy and AI infrastructure.
The yen remained one of the day’s most important risks. The dollar traded around 159.20 yen in Tokyo-market reporting and later around 159.38 yen in Reuters global-market data. The currency has given back much of the gain made after last week’s suspected intervention, keeping investors alert for another move toward the 160 level.
The yen is stronger than its late-July lows near 164, but still weak enough to keep imported inflation in focus. A weak yen supports exporters by lifting the yen value of overseas earnings, but it raises costs for imported fuel, food, raw materials, chemicals and consumer goods.
That makes the currency a political and household issue as much as a market issue. Consumers face higher prices for groceries, gasoline, electricity, transport and daily services, while smaller businesses struggle to absorb higher import, wage and logistics costs.
The BOJ’s policy outlook remained central after Reuters reported that markets are increasingly pricing in an early rate hike in Japan. The five-year Japanese government bond yield rose to a record high of 2.12%, while the two-year yield reached a 31-year peak of 1.645%.
Shorter-dated yields are especially sensitive to BOJ rate expectations. Their rise shows that investors are assigning greater probability to another increase before year-end, possibly as early as the September 17-18 meeting if the yen weakens further or price pressure continues to build.
The BOJ kept rates unchanged at 1% at its July 30-31 meeting, but board member Hajime Takata dissented in favor of a hike to 1.25%. The central bank also warned that underlying inflation could exceed its 2% target, indicating that policymakers are becoming more concerned about the risk of prices staying high.
The latest Reuters Tankan survey reinforced the view that the economy is not weakening sharply. Manufacturers’ sentiment rose to plus 18 in August from plus 13 in July, the highest level since March, supported by strong semiconductor-related demand. Non-manufacturers’ confidence also improved, rising to plus 28 from plus 25.
Semiconductor-related industries drove much of the improvement. The chemicals sub-index rose to plus 33, while metal and machinery improved to plus 25. Companies reported strong order intake for semiconductor-related products, with one precision-machinery respondent saying orders had risen markedly since April both in Japan and overseas.
The survey suggests that Japan’s corporate sector remains resilient despite market volatility, currency swings and concerns over global inflation. It also supports the BOJ’s argument that companies may be increasingly confident about investment, pricing and wage decisions.
Transport equipment sentiment remained flat, however, reflecting mixed conditions in the automotive sector. Automakers have benefited from the weak yen and hybrid-vehicle demand, but they face uncertainty over currency intervention, global interest rates, logistics costs and the risk that a stronger yen could reduce earnings support.
For households, the picture remains less comfortable. Wage growth has improved, and recent real-wage data have been positive, but consumers remain sensitive to repeated price increases. The question is whether higher pay can offset food, fuel and service inflation enough to sustain consumption.
TV Tokyo’s broader business focus remains relevant to this market: companies are still trying to pass on higher labor, energy, food and logistics costs, while households are carefully managing spending even when wages rise. Businesses with pricing power are being rewarded by investors, while companies unable to pass on costs face margin pressure.
Prime Minister Sanae Takaichi’s government is trying to support both households and long-term investment. Relief measures tied to food prices and consumption-tax pressure remain under discussion, while the administration is also promoting more than 370 trillion yen in public and private investment through fiscal 2040.
That investment strategy targets semiconductors, artificial intelligence, energy security, defense, shipbuilding, robotics, space and other strategic industries. It supports many of the companies involved in Japan’s AI and infrastructure trade, including semiconductor suppliers, materials makers, cable producers, power-system companies and advanced manufacturers.
The challenge is funding. Investors remain sensitive to the possibility that household relief and strategic investment could increase government borrowing. Higher bond issuance or doubts about fiscal discipline could push JGB yields higher and weaken confidence in the yen.
Oil was the main external risk on August 12. Brent crude rose to $89.46 a barrel, while U.S. crude climbed to $83.71. Prices were supported by geopolitical tensions involving the Strait of Hormuz, attacks on shipping near Yemen and uncertainty over the Iran conflict.
For Japan, oil near $90 is a significant risk even though it remains below the most extreme levels seen during the July shock. A sustained rise would increase the cost of gasoline, electricity, aviation fuel, shipping, chemicals and manufacturing. The impact is amplified when the yen is weak because energy imports are priced largely in dollars.
Energy shares benefit from higher oil, but the broader economy does not. Higher crude prices worsen Japan’s trade balance, reduce household purchasing power and complicate the BOJ’s effort to distinguish between temporary import-driven inflation and more durable domestic price pressure.
Gold and silver also rose as investors sought safe-haven assets. That risk tone limited enthusiasm in equities even though Asian technology shares were stronger. Markets were waiting for U.S. consumer price data later in the day, which could influence Federal Reserve expectations and the dollar-yen exchange rate.
A softer U.S. inflation reading would likely reduce pressure on U.S. yields and could support the yen, easing imported inflation concerns for Japan. A stronger reading could push the dollar higher, weaken the yen again toward 160 and increase pressure on the BOJ to sound more hawkish.
The global backdrop was therefore supportive for risk appetite in some areas but fragile overall. South Korean technology shares rallied, but oil, geopolitical tensions and U.S. inflation risk kept investors from aggressively extending Tokyo’s advance.
What to watch next: whether the Nikkei can break above 67,000 and hold that level, whether TOPIX continues to show broader resilience, and whether energy and financial shares can keep offsetting weakness in electronics and pharmaceuticals.
Investors will also monitor whether the yen weakens beyond 160 to the dollar. A move through that level would test the credibility of the latest intervention and could revive expectations of a BOJ rate increase as early as September.
The two-year and five-year JGB yields will be key policy signals. Further increases would show that markets are pricing in faster BOJ normalization, while a retreat would suggest investors are waiting for clearer inflation and wage data.
Oil prices near $90, developments around the Strait of Hormuz, U.S. CPI data, South Korean semiconductor shares and Japan’s next corporate earnings announcements will shape the next stage of trading. August 12 showed that Tokyo’s broader market remains firm, but the Nikkei will need support from both AI shares and macro stability to move decisively beyond 67,000.
