The Nikkei Stock Average Volatility Index (Nikkei VI) surged to 34.19 as of 14:05. Nikkei 225 futures were weak today, and concerns are growing over rising volatility ahead of movements in U.S. stocks and key events next week.
The Nikkei VI had risen sharply to 34.19 as of 14:05, up 5.81 from the previous day, a 20.47% gain. The day's high was 34.62 and the low was 33.37.
Nikkei 225 futures have remained weak. Although major U.S. stock indexes rose, caution over rising market volatility is spreading ahead of key events next week, including U.S. corporate earnings announcements and speeches at the Jackson Hole meeting.
The Nikkei VI is an indicator of the market's expected volatility over the coming month. It is said to tend to revert to a certain range, generally around 20 to 30, after a sharp rise.