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Nikkei Semiconductor Index reaches two-week high as Advantest shares jump 7%

Wednesday, March 18, 2026 at 09:58 AM

The Nikkei Semiconductor Index reached its highest level in two weeks, driven largely by Advantest shares which saw an intraday rise of 7%. The movement reflects broader market recovery for semiconductor manufacturing equipment providers.

Context

The Nikkei Semiconductor Stock Index reached a two-week high on March 18, 2026, primarily propelled by a 7% surge in shares of Advantest Corp., a global leader in semiconductor test equipment. This rally follows a period of exceptional financial performance for the company, which recently reported a 64% year-on-year increase in quarterly operating profit to ¥113.6 billion. As a critical supplier to Nvidia, Advantest has become a primary beneficiary of the ongoing AI infrastructure boom, specifically through its high-demand testers for HBM (High Bandwidth Memory) and SoC (System-on-a-Chip) devices. Market momentum remains strong as Advantest recently raised its full-year operating profit forecast by over 21% to ¥454 billion for the fiscal year ending March 2026. While demand for automotive and industrial semiconductors remains soft, the massive capital expenditure toward AI-related high-performance computing continues to drive record sales. Investors are increasingly viewing the company as a high-beta play on the global AI supply chain, with the Nikkei Semiconductor Index reflecting broader optimism across the Japanese chip ecosystem.

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