Thanks for Glenn Hess’s article “U.S. Seeks Tighter Rail Safety Rules” (C&EN, Aug. 18, page 22). However, the word “volatile” is misused when he writes that “ethanol is less volatile than crude oil.” ...

Learn what volatility means in investing, how it's measured, and why it matters for your portfolio.

The United States Environmental Protection Agency (“EPA”) published a November 28th Federal Register Notice that revises the regulatory definition of volatile organic compounds (“VOCs”) under the ...

Volatility is a statistical measure of the amount an asset’s price changes during a given period of time. It has become a popular way of assessing how risky an asset is – the higher the level of ...

Most days, the stock market doesn’t see big moves higher or lower. Generally, indexes like the S&P 500 gain or lose less than 1% a day. But from time to time, the market experiences significant price ...

Look at a chart of the Standard & Poor’s 500 index today: It’s like a mountain range in Mordor — jagged movements, all up and down. Today, the Dow Jones industrial average fell more than 560 points at ...

Volatility is a measure of risk that is the statistical quantification of a security's possible investment returns. In short, it means large swings in price over a short period of time. Volatility in ...