Amazon underperformed the market in 2025.Amazon had a disappointing 2025, with the stock only rising around 6% while the S&P 500 gained around 18%. That's a sharp underperformance and will have been frustrating for investors since nearly every other big tech company had a much better year. However, thanks to its underperformance, Amazon may be slated to enjoy a much better year ahead.So, could Amazon be the comeback stock of the year in 2026? I've got three reasons why I think that will be the case, and inv ...