If inflation does remain sticky, three stocks you'll want to own are Progressive (NYSE: PGR), Unum Group (NYSE: UNM), and Marsh & McLennan (NYSE: MMC). Massive fiscal spending during the pandemic, supply chain issues, rising rents, and food prices have contributed to stubbornly high inflation. According to St. Louis Federal Reserve President James Bullard, told CNBC in late August that inflation could "be more persistent than many on Wall Street expect."