Warren Buffett's $90 billion Apple stake represents a ridiculous 20% of Berkshire Hathaway's market value

· *Warren Buffett's Berkshire Hathaway owns Apple shares valued at almost $90 billion.*
· *Berkshire's market capitalization is $440 billion, meaning its Apple stake is now worth 20% of the entire company.*
· *That's surprising because Apple is just one stock in Berkshire's portfolio, which was valued at $175 billion at the...