Wall Street used to be about the Magnificent Seven. Now it's just about the three giants: Apple, Nvidia and Microsoft, all worth more than $US3 trillion each. So how should investors think about these behemoths?

William Liu, Senior Investment Analyst at WAM Global, talks to Sean Aylmer about the outlook for the big three.

This is Fear & Greed's summer investing series. All information is general in nature - you should seek independent professional advice before making investment decisions.