An economy challenged by inflation and a market preparing for interest rate hikes have been made worse by Russia's invasion of Ukraine and the turmoil and uncertainty that has caused. In uncertain times, it's hard to know where to turn, but a good place to start might be with one of the world's greatest investors, Warren Buffett, founder and CEO of Berkshire Hathaway. Third, a recovering economy and the end of COVID-19 mask mandates should result in an uptick in travel and entertainment spending, which makes up a significant part of American Express's revenue.