Homebuyers may not see significantly lower mortgage rates this year, but other parts of the housing market show promise.

Warren Buffett is telling investors something -- not through what he has said, but through his actions with the balance sheet of his investment conglomerate Berkshire Hathaway ( BRK.A -0.40%) ( BRK.B 0.83%). These actions should be taken as a warning sign with the stock market reaching elevated valuation levels in recent months.

Warren Buffett has affinity for dividend stocks, and Kraft Heinz (NASDAQ: KHC) is the highest-yielding dividend stock in his portfolio. Unfortunately for Buffett, Berkshire Hathaway (NYSE: BRK.A, BRK.