Michael Lewis, whose book "Flash Boys" stirred up controversy on Wall Street, said Monday that when it comes to investing he is really "boring."
The author said he invests in index funds and Berkshire Hathaway, which he called his "hedge."
"I figure if things really go bad, [Warren Buffet's] going to be sitting there with a pile of cash buying up bargains on really good terms," Lewis said in an interview with "Power Lunch."
In "Flash Boys," Lewis argued the market was rigged in favor of high-frequency traders, who use sophisticated computer algorithms to execute orders at very fast speeds. It caused a heated debate over the merits of the system. On Monday, he said he still believes the market is rigged.