Advantest stock gains 5.99 percent as AI chip momentum lifts outlook

Published on 09/21/2026 at 15:57 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Advantest stock jumped 5.99 percent to JPY 32,050 on September 21, 2026, supported by strong demand for AI-related semiconductor testers. The company’s raised 2026 SoC tester sales and operating profit guidance underline its growth profile versus the Nikkei 225.

Advantest, JP3122400009, Illustration mit AI erstellt.

Advantest Corporation stock (ISIN JP3122400009) closed at JPY 32,050 on the Tokyo Stock Exchange after a 5.99 percent rise on September 21, 2026, putting it close to its recent 52-week high of JPY 36,390 per a TradingView market snapshot.

Stock reacts to AI semiconductor momentum

According to note.com on September 21, 2026, Advantest shares rose 5.99 percent during the session, driven by buying interest in Japanese semiconductor names after a strong overnight gain in the U.S. Philadelphia Semiconductor Index.

As note.com reported on September 21, 2026, Advantest already closed at JPY 32,050 on September 18, 2026 after a 5.98 percent single-day increase, following comments from Nvidia’s chief executive that sales could double next year and a more than 3 percent rise in the U.S. SOX index.

Guidance raised for 2026 SoC tester business

Per an analysis by Investing.com Korea dated September 21, 2026, Advantest in July 2026 raised its SoC tester revenue forecast for the fiscal year 2026 (April 2026 to March 2027) to JPY 1,243.5 billion, up 62.0 percent year on year.

According to the same Investing.com Korea article, Advantest also lifted its operating profit outlook for fiscal 2026 to JPY 846.0 billion, representing a 69.5 percent year-on-year increase, meaning profit growth is expected to outpace the strong rise in revenue.

The same analysis notes that SoC testers are expected to contribute 72.5 percent of Advantest’s total revenue forecast for fiscal 2026, with SoC segment sales projected to grow at a compound annual growth rate of 34.6 percent over the coming years, underscoring how heavily the group’s medium-term earnings path is tied to custom AI semiconductor test demand.

Valuation, risks and comparison to the broader market

According to Investing.com Korea, Advantest’s 12-month forward price-earnings ratio stands at 28.7 times, compared with 19.0 times for the Nikkei 225 index, reflecting a valuation premium but also higher expected earnings growth.

The same source highlights that consensus expects Advantest’s earnings per share to grow at a compound annual rate of 24.3 percent between fiscal years 2026 and 2028, versus 13.3 percent for the Nikkei 225, resulting in a price-earnings-to-growth (PEG) ratio of 1.2 times for Advantest compared with 1.4 times for the index, suggesting its faster growth partly offsets the higher headline multiple.

For investors, this mix of raised 2026 guidance, a PEG ratio below the broader Japanese benchmark and direct exposure to custom AI semiconductors explains why the stock can move sharply on days when global AI chip sentiment strengthens, but it also means that any setback in AI spending or a reversal in the semiconductor cycle would be a key risk to the current valuation.

Stock level and trading data

Advantest stock’s close at JPY 32,050 on September 21, 2026 compares with a 52-week range between JPY 17,410 and JPY 36,390 based on a TradingView snapshot cited in an ad hoc market commentary dated September 21, 2026, leaving roughly 12 percent headroom to the top of that range and showing the extent of the recent rally from the lower end.