I'm talking about Berkshire Hathaway Inc. (NYSE: BRK.B ), which for me, has become one of the world's largest mutual funds - but without the management fee. Not all of its holdings will benefit from inflation, but if there's a single stock to buy to protect on the downside, BRK is it. InvestorPlace - Stock Market News, Stock Advice & Trading Tips Those bullish on the markets are starting to question the strength of the earnings cycle we've experienced the last couple of years due to rising inflation that's putting a strain on wages and input costs.