Since stock prices continue to fluctuate, Microsoft and Apple are still vying for the title of being the most valuable USA company. In August, Apple's market cap rose above the $1 trillion level, becoming the first USA stock to reach that level.
Microsoft and Apple have been duking it out for years over their computer services and other technological innovations they've produced in the last few decades.
Watch Microsoft and Apple trade live. That would put it below both Amazon.com, now valued about US$770 billion, and Google-parent Alphabet Inc., which has a market cap of about US$730 billion. Microsoft became a juggernaut among software makers, while Apple and other Silicon Valley companies fought for market share.
Microsoft's cloud-computing unit Azure has grown at a blistering pace; it's up 76 percent annually and remains the biggest competitor to Amazon.com, Inc.
Near 1800 GMT (2 a.m. Tuesday in Manila), Microsoft hit an overall market capitalization of $812.9 billion, just ahead of Apple's $812.6 billion, according to Bloomberg News. Meanwhile, Apple's valuation has fallen over 20 percent since its own earning results, which didn't look all that hot. Its smartphone business has slowed down due to a very complicated list of factors but has tried to compensate revenue by raising the retail price of iPhones every year while also focusing on selling subscription based services like iCloud and Apple Music.
But a turnaround began when the Redmond, Washington, company promoted Nadella as CEO in 2014.
Technology shares have been punished in recent months on investor worries about rising interest rates and fallout from the trade conflict between the United States and China.
With that said, even though Microsoft is once again in second place, there's a good chance the tech giant will remain neck-and-neck with Apple for the foreseeable future.