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.” ...

Discover the most volatile stocks in the market, featuring companies with the biggest price swings and notable fluctuations over time.

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 ...

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 ...

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 ...