The S&P 500 (^GSPC) is concentrated primarily in the top ten technology stocks, according to Barclays. PNC Asset Management Group chief investment officer Amanda Agati, Yahoo Finance Senior Business Reporter Ines Ferré, and Yahoo Finance Senior Reporter Brooke DiPalma join Opening Bid host Brian Sozzi to discuss the market's concentration in tech and whether it's time for investors to start selling the "Magnificent Seven." To watch more expert insights and analysis on the latest market action, check out more Opening Bid.