Amazon moved ahead of Google parent Alphabet on Tuesday  to become the United States second-most valuable company based on stock price.  Still way behind Apple.

The market capitalization of Amazon stands currently at $768 billion on Tuesday, ahead of Alphabet which is around $762 billion.  Apple is at $889 billion.

These three companies are at the forefront of the battle for your smart home with Apples Homekit and Homepod, Googles Home and Amazons Alexa technology.

Amazon has been on a fast rise to the top of late. It passed Microsoft for third place in market capitalization on Feb. 14. 

Amazon owner Jeff Bezos is currently the worlds richest person with Forbes putting his net worth at around $131.1 billion. with his 16% stake in Amazon, which he founded in a Seattle garage in 1994.