Shares of Netflix Inc. /zigman2/quotes/202353025/composite NFLX +1.83% continued their torrid record pace Friday, closing up 8% to $548.73. The streaming service, expected to announce yet another strong quarter on July 16, has been one of the top-producing tech stocks since the COVID-19 outbreak in March. Netflix's closing price gave it a valuation above those of rivals Walt Disney Co. /zigman2/quotes/203410047/composite DIS +1.00% , AT&T Inc. /zigman2/quotes/203165245/composite T -0.07% , and Comcast Corp. /zigman2/quotes/209472081/composite CMCSA +0.81% . Netflix shares have also benefited from glowing market research notes in recent days, topped by Goldman Sachs' prediction of its price reaching $670 per share. Netflix shares are up 70% in 2020, while the broader S&P 500 index /zigman2/quotes/210599714/realtime SPX +1.40% is down 1.4%.