Nikkei 225 breaks 62,000 for a new high; tech and electronics sector shares are broadly up

Japan’s Nikkei 225 index first broke through the 62,000-point level on Thursday, rising 5% in a single day and becoming the most notable gainer among Asia’s major indexes this week. Electronics manufacturer IBIDEN led the full-day advance with a 22.43% gain, Mitsui Metal rose 17.05%, and SoftBank Group climbed 16.45%. Single-day gains across technology, materials, and electronics sectors were generally in double digits.

Top Stock Gainers: Electronics and Materials Lead the Market

IBIDEN: +22.43% (Electronics manufacturer, highest intraday gain)

Mitsui Mining: +17.05% (Materials sector)

SoftBank: +16.45% (Technology and investment holding)

Renesas Electronics: +13.42% (Semiconductors)

Tosoh: +11.03% (Chemical materials)

Other Asian stock markets saw comparatively milder gains: Hong Kong’s Hang Seng Index rose 1.48%, Australia’s S&P/ASX 200 gained 0.83%, and China’s CSI 300 edged up 0.13%; after South Korea’s KOSPI hit a record high on Wednesday, it gave back the advance and fell 0.17%.

Gold Week Effect: Concentrated Absorption of a Strong Week in US Stocks

The structural backdrop behind the surge cannot be ignored. Japan had just ended its Golden Week holiday period and reopened the market, allowing investors to digest the strong performance in the US technology sector from the prior week in one go. This concentrated catch-up buying amplified opening momentum. The S&P 500 has gained more than 16% since its March 30 low, building a substantial amount of positive momentum that remains to be transmitted to Asian markets. The vacuum created during the Golden Week period, in turn, reinforced this effect.

US-Iran Talks: The Biggest Uncertainty Keeping the Market Up

The market is also closely watching the two-sided signals from the US-Iran talks. US President Trump said that before his upcoming visit to China, the two sides could reach an agreement; but on the same day, Trump also warned that if Iran refuses to accept the proposed peace accord, it would face military action. This sharply contrasting double signal makes oil prices and global risk markets highly sensitive to related headlines, creating a potential source of volatility in subsequent market sentiment.

Whether Japan’s stock market can sustain its strength after breaking 62,000 points will depend to a large extent on whether AI development momentum can continue, and whether the US-Iran talks move in a more certain direction.

Frequently Asked Questions

What is the technical significance of the Nikkei 225 breaking above 62,000 points?

62,000 points is the all-time high of the Nikkei 225. A first break above it means the main resistance level has been effectively breached, which is typically interpreted by the market as a technical signal that upside room may open. The breakthrough came with a strong single-day rise of 5%, suggesting its validity is relatively stronger, but it also increases the likelihood of a technical consolidation in the short term.

Is the catch-up effect after Golden Week a regular phenomenon for Japan’s stock market?

Golden Week typically lasts for a week. During Tokyo’s market closure, external momentum often accumulates and then gets released in a concentrated way after reopening, producing a “catch-up” or “catch-down” effect. In this case, US technology stocks kept setting new highs during the holiday, creating a clear positive catch-up momentum—one of the common structural patterns after holidays—though the scale comparable to the current situation is relatively rare.

How does uncertainty from the US-Iran talks transmit to Asian stock markets?

The US-Iran talks mainly affect Asian markets through two channels: first, oil-price volatility (if talks break down and tensions rise, a sharp jump in oil prices would increase corporate costs and squeeze profit margins); second, changes in overall risk sentiment (geopolitical conflicts usually trigger selling risk assets). Japan is a country that relies heavily on imported energy, making it especially sensitive to oil-price moves.