Berkshire Hathaway on Friday revealed a $4.3 billion stake in Google parent Alphabet and said it further reduced its stake in Apple, detailing its equity portfolio for the last time before Warren Buffett ends his 60-year run as chief executive.

The European Commission opened a new investigation into how the tech giant ranks news publishers in search results.

Alphabet's Google said on Friday it would invest $40 billion in three new data centers in Texas, as part of its push to expand capacity for artificial intelligence initiatives.