Three resilient companies that can solidify your portfolio today are Waste Management (NYSE: WM), McDonald's (NYSE: MCD), and Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B). Marks says several factors, including a reversing of globalization, tight labor markets, rising wages, and a growing economy, could keep inflation higher than what investors have grown accustomed to in the last few decades. These companies produce consistent revenue and strong cash flows and reward investors with dividends or share buybacks, making them more stable stocks with lower volatility.