Shares of UnitedHealth Group are surging before the market open Friday as Warren Buffett's Berkshire Hathaway disclosed that it recently purchased shares of the beleaguered insurer.

Buffett's newly revealed mystery stock -- a $1.6 billion position -- presents as a rare price dislocation in a historically pricey market.

As a parent, I’ve been thinking about the power of time when it comes to setting our kids up for financial success.