Amazon (AMZN)

AWS cloud dominance combined with advertising growth turned Amazon into a cash-generating machine, with the stock delivering over 500% returns across the decade—outperforming the average S&P 500 stock by more than 300 percentage points and growing its advertising revenue to over $46 billion in 2023. For context, this return is 50% higher than Broadcom's 400% over the same period, and Amazon's advertising business now accounts for over 7% of total US digital ad spend.