The Nikkei index plunged more than 3,100 points on Monday as investors reacted to U.S. interest rate expectations and a tech sell-off [1].

This volatility signals a shift in investor sentiment toward Japanese equities, which had seen a prolonged period of growth. The sharp correction reflects the market's sensitivity to U.S. monetary policy and global geopolitical tensions.

Trading on Monday morning saw the index drop by 2,547 points [1]. This downward pressure followed a session in New York where the Dow Jones Industrial Average fell by 878.82 dollars [2]. Market participants said that the decline was driven by a sell-off of high-tech stocks in the U.S. and growing concerns that the U.S. may raise interest rates [1, 2].

Instability in the Middle East further eroded confidence. A market source said that because the outlook for the Middle East remains uncertain, optimistic views have receded, and the 70,000-point mark has moved further away [1].

Analysts described the move as a necessary adjustment after a long climb. A representative from TBS NEWS DIG said, "It had been going up for a long time. This is an adjustment in that area" [1].

Despite the sharp drop, some observers urged caution against panic. The same representative said, "Basically, wild fluctuations are to be expected, so the most important thing is not to be swayed by every single move" [1].

Earlier data from April 28 showed a different scale of volatility, with a daily drop of 619.90 points [3] and a closing level of 59,917.46 points [3]. Trading volume on that day reached approximately 2.67 billion shares [3]. The current volatility on Monday represents a significantly more aggressive market reaction than seen in previous weeks.

The Nikkei index plunged more than 3,100 points on Monday

The Nikkei's sudden collapse demonstrates the tight coupling between Tokyo and New York markets, particularly regarding the tech sector. By reacting sharply to US rate-hike speculation and Middle East instability, Japanese investors are signaling a lower tolerance for risk after a period of aggressive growth, suggesting that the path toward the 70,000-point milestone will now face significant headwinds.