Apple and Tech dominate top companies by market valuation lists

Apple now has a valuation of over $800 billion. It is the most valuable publicly traded company.

Google is at $649 billion.
Microsoft is at $531 billion.
Amazon is at $448 billion
Facebook is at $434 billion.

Berkshire Hathaway is at $408 billion as the largest non-tech company.

Alibaba, the Chinese internet company, is the highest valuation for a non-US public company.