The housing market has been in flux over the past few years, as housing supply shortages, rising prices, and stubborn mortgage rates have dampened buyer enthusiasm. Homebuying trends and housing market dynamics shifted as buyers became more money-conscious,

Berkshire Hathaway ( BRK.A 0.98%) ( BRK.B 0.98%) stock is down big since Warren Buffett announced that he would be stepping down as chief executive officer (but remain chairman) by the end of the year. Here's why the sell-off is a buying opportunity for investors looking for an ultra-reliable blue chip stock to hold for years to come.