Volatility index sees largest jump since April amid market concerns
Market activity on Thursday revealed unexpected shifts, as evidenced by the rapid increase in the Cboe Volatility Index (VIX). The VIX rose by as much as 5.7 points, exceeding 28 shortly after the market opened. This marks the highest level for the index since March 31, a period of heightened tension between Iran, Israel, and the United States.

The index’s movement throughout Thursday, spanning over 11 points, represents the most significant single-day change since April 9. Despite the S&P 500 experiencing a 3% decline, some traders believe the volatility reading should be even greater. A common guideline suggests a 16-point increase in the VIX correlates with a 1% movement in the S&P 500.
The S&P 500 is on track to record its largest drop since April 2025.
Source
“Wall Street's fear gauge surges the most since April. Why traders think it should be even higher”
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