Get Mystery Box with random crypto!

​As the coronavirus hit the U.S. in March, the S&P 500 index p | ITI Funds

​As the coronavirus hit the U.S. in March, the S&P 500 index plummeted. Since its nadir, it has leapt more than 40% in 3½ months to within 6% of its all-time high. How can the stock market be so strong? MarketWatch presents its answer.