Walgreens stock can't seem to get out of its tailspin. Sometimes it can seem like a stock is a falling knife, where trying to slow its fall is just going to cut you. That's what Walgreens Boots Alliance (WBA -2.45%) investors may be feeling right now. The stock has dropped to levels it hasn't traded at since the 1990s, and it keeps falling lower. The price drop suggests that the market knows that Walgreens faces a tough road ahead. Walgreens is working to regain the market's confidence. With a new CEO, ther ...