Really good article on CNBC about Bitcoin's market cap reaching record-breaking highs...
https://www.cnbc.com/2017/08/15/bitcoin-price-market-cap.html
Bitcoin hit a record high of $4,483.55 on Tuesday.
Bitcoin's market capitalization reached as high as $73.5 billion, within touching distance of major stocks like Netflix.
If bitcoin was a stock, it would be the seventy-fourth biggest by market capitalization, on the S&P 500.