Volatility refers to changes in share prices over a short period. If an investment is highly volatile, the value of the investment goes up and down all the time. This is considered risky, because it’s difficult to predict what the share will be worth when you are getting to ready to sell. This post discusses volatility in more detail: ETF: Volatility explored
Other related posts:
ETF: Volatility case study
ETF: Volatility ETFs explained
Podcast: Managed volatility ETFs
Podcast: Volatility and your retirement
ETF: Do volatility managed ETFs work in volatile times?