On March 9, 2009, the combined market cap of Apple, Microsoft, Google (Alphabet), and Amazon was $326 billion.

Their combined market cap today: $5.77 trillion, up more than 17x since 3/9/09.

$AAPL $MSFT $GOOGL $AMZN

Data/Chart via @ycharts https://t.co/LRfxqBm0PV