In Berkshire Hathaway's (NYSE: BRK.A)(NYSE: BRK.B) latest earnings report, we learned that while the conglomerate's operating businesses are generally doing fine, CEO Warren Buffett might be giving us warning signs about the stock market and U.

Warren Buffett raised $158B in cash this year, selling stocks in Q3 and opting for Treasuries. Find out why BRK.B continues to sell stocks at a brisk pace.

Warren Buffett is now sitting on more than $325 billion cash after continuing to unload billions of dollars worth of Apple and Bank of America shares this year and continuing to collect a steady stream of profits from all of Berkshire Hathaway's assorted businesses without finding any major acquisitions.