Berkshire Hathaway (BRK.B) (BRK.A) paid $26.8B to the Internal Revenue Service last year, "about 5% of what all of corporate America paid," Chairman, CEO and legendary investor Warren Buffett wrote in his annual shareholders' letter on Saturday.

Investors are poised to study the letter Saturday for insights about the stock market.

Warren Buffett's Berkshire Hathaway is holding a record $300 billion in cash, raising questions about his investment strategy and market outlook as stock valuations remain high

Investors are awaiting Berkshire Hathaway Chairman Warren Buffett’s annual investor letter, in which he typically expounds on Berkshire’s performance along with anecdotes and vignettes about investing and life.

Warren Buffett wrote to Berkshire Hathaway shareholders in 2014 that most investors shouldn't try to pick individual stocks to buy because they couldn't "predict their future earnings power." Instead, he recommended that the typical investor buy a "low-cost S&P 500 index fund."

There’s a good chance that Berkshire Hathaway’s stock will lag the S&P 500 in the coming years. This is a matter of simple probabilities, and not a criticism of Berkshire Hathaway Chairman and Chief Executive Warren Buffett or his designated successors.

One of the world's most-watched investors has been piling on cash for a while. Now, Warren Buffett says the money will be deployed, mostly, in American stocks.

Key Takeaways Warren Buffett's Berkshire Hathaway is set to report fourth-quarter earnings on Saturday.Buffett's annual shareholder letter, which investors look to for commentary on investments and the economy,