The stock market slipped Friday as Treasury yields reversed Thursday’s retreat, with the 10-year note climbing back to the key 5.0% mark.

The S&P 500 (SP500) -0.2%, the Dow DJI -0.4%, and the Nasdaq Composite COMP was virtually flat.

Now, here are 4 news stories that broke in the morning to watch out for:

Warren Buffett steps down as Berkshire Hathaway chairman: The 96-year-old billionaire is  relinquishing the chairman role after 61 years, becoming chairman emeritus while remaining on the board. His son Howard G. Buffett, a 33-year board veteran, has been named chairman, while Greg Abel continues as CEO after succeeding Warren Buffett in that role less than a year ago. “Father Time always wins,” Buffett wrote in a letter to shareholders,…