The tech giant's revenue has declined in five of the last six quarters, and the stock's recent returns reflect poor investor sentiment.Among the "Magnificent Seven" stocks, only two have produced negative returns so far in 2024: Tesla and Apple (AAPL 0.02%). Although Apple shares are only down a modest 1.5% as of this writing, the company's latest earnings signal that further losses could be on the horizon.Apple's growing challengesApple is one of the most innovative companies of all time. From the iPad to ...