Nikkei Average Drops Over 4,100 Points in Fifth-Largest Decline

The Nikkei average fell more than 4,100 points on Friday, marking the fifth-largest daily drop in the index's history ^[1].

This collapse highlights the extreme sensitivity of the Japanese market to volatility in the U.S. tech sector. Because semiconductor stocks drive a significant portion of the Nikkei's weight, a downturn in New York often triggers a domino effect in Tokyo.

The volatility began on Thursday, July 16, when semiconductor-related stocks experienced a sharp decline in the New York market ^[1]. This trend spilled over into the Tokyo Stock Exchange, where investors expanded their sell orders in a widespread panic.

Among the hardest hit was semiconductor manufacturer Kioxia. The company's shares hit a stop-low, a limit that prevents further trading once a stock drops by a specific percentage in a single session ^[1].

The financial impact on Kioxia was severe. Last month, the company's market capitalization was approximately ¥60 trillion ^[1]. By July 17, that value had plummeted to roughly ¥28 trillion ^[1].

The broader market followed a similar trajectory. The index's drop of more than 4,100 points ^[1] reflects a sudden loss of confidence in the short-term stability of chip-related assets. This movement represents one of the most significant single-day losses ever recorded for the Nikkei average ^[1].

Market analysts said that the correlation between U.S. chip stocks and Japanese equities remains tight. When the U.S. market corrects, Japanese firms — particularly those integrated into the global semiconductor supply chain — often face amplified losses due to high trading volumes and algorithmic selling.