85% of Warren Buffett's $290 Billion Portfolio Is Invested in These 12 Magnificent Stocks
The Oracle of Omaha is a big believer in concentrating Berkshire's invested assets into his top ideas.

When it comes to top-notch money managers on Wall Street, Berkshire Hathaway (NYSE: BRK.A)(NYSE: BRK.B) CEO Warren Buffett is in a class of his own. Since taking over Berkshire six decades ago, the appropriately named "Oracle of Omaha" has led his company's Class A shares (BRK.A) to a cumulative return that topped 6,475,000%, as of the closing bell on March 27.
With Buffett consistently running circles around the benchmark S&P 500 in the return column, it's no surprise that investors wait eagerly for Berkshire's Form 13F filings to see which stocks he's been buying and selling.
But the biggest surprise investors are likely to find in Buffett's $290 billion portfolio is that it's highly concentrated.