When it comes to seeking out a financial advisor, you could do worse than to invest your time learning from one of the richest men in the world. Warren Buffett, sometimes called the "Oracle of

But Buffett hasn't lost his enamor with all stocks. The "Oracle of Omaha" has even invested $2.9 billion in one stock this year. What is it -- and is it a no-brainer buy now?

Warren Buffett passing on purchasing shares of Berkshire's stock when his company's cash pile is sitting at a record high ($325 billion) signifies that one of Wall Street's most ardent value investors is struggling to find a good deal. Berkshire's price-to-book value recently hit levels that haven't been consistently observed since 2008.

For one of the richest people in the entire world, Warren Buffett, the CEO of Berkshire Hathaway, is surprisingly down to Earth. He famously lives in the same modest house in Omaha that he bought

It is indeed interesting that Berkshire now holds $320 billion in cash vs just $272 billion in equity investments. Put another way, Buffett is holding more cash than stocks. "That’s a lot of firepower if markets see a sustained drop," notes Colas. "While Berkshire is not especially expensive, its multiple may be worrisome to a value investor ."

Warren Buffett isn't usually one for hoarding cash. So what's he going to do with Berkshire Hathaway's S&P 500-busting amount?

The conglomerate owns dozens of stocks that have helped fuel its stock's growth and plenty of investors mimic CEO Warren Buffett's investing decisions for Berkshire. Given its strong performance, you'd be wise to poach a few of Buffett's picks for your own portfolio.