Does Berkshire's big tech bet signal a new risk tolerance in Omaha?

In this articleBRK.BBRK.A(This is the Warren Buffett Watch newsletter, news and analysis on all things Warren Buffett and Berkshire Hathaway. You can sign up here to receive it every Friday evening in your inbox.)Just one week after Berkshire Hathaway's revelation last Friday that it purchased 17.8 million Class A shares of Google's parent, Alphabet, in the third quarter (July-September), that position has increased in market value by $415 million to almost $5.35 billion.GOOGL gained 8.4% this week while it ...