Markets are racing higher, but some stocks are trading at fire-sale prices.The S&P 500 as a whole is testing new all-time highs, but not all stocks are performing well. Some iconic companies have lost more than 40% of their value since 2024 began. And now could be the time to buy one of these S&P 500 laggards.Down 56%, is this major retailer a screaming buy?Walgreens Boots Alliance (WBA 0.61%) is a well-known American company. Headquartered just outside Chicago, Illinois, the company operates more than 8,00 ...