amazoncom stock had a rotten 2021 gaining just 4 for the year while the sp 500 index rallied 30 the stock was hurt by a host of factors including slowing growth in ecommerce as some shoppers returned to physical stores nervousness about the ceo shift to andy jassy from founder jeff bezos increased regulatory scrutiny in particular from new ftc chair lina khan worries about product shortages and increasing pressure on labor costs among other things in a research note on amazon ticker amzn on monday bofa