fear index; volatility index
Financial term, often referring to the VIX index (ＶＩＸ指数) which measures market volatility and investor fear.
See also: ＶＩＸ指数
The fear index spiked.
Investors are closely watching the volatility index.
ＶＩＸ指数 is the specific CBOE Volatility Index, while 恐怖指数 is a broader term for any fear/volatility index.
Compound of 恐怖 (fear) and 指数 (index). A direct translation of the English financial term 'fear index'.