Both Warren Buffett and Howard Marks dislike equating volatility with risk, although this is the most common definition of risk used in asset management. The lack of volatility (prior to last week) in the prices of the big 'FAAMG' stocks (Facebook, Apple, Amazon, Microsoft (or Netflix) and Alphabet, parent of Google) illustrates the problem. These stocks have risen to lofty valuations which have driven 40% of the gains in the broad S&P500 year-to-date.