Amazon's $500 billion market milestone marks its status as corporate titan | The Seattle Times
Amazon Overtakes Alphabet in Market Cap: How The 2 Tech Giants Compare | Nasdaq
First to $1 trillion: Amazon or Apple? No-brainer — the people have spoken - MarketWatch
Steve Burns on Twitter: "20 yrs ago: Walmart's market cap was 37x larger than Amazon 10 yrs ago: Walmart's market cap was 7x larger than Amazon. 5 yrs ago: Walmart's market cap