We're witnessing one of the most dramatic declines by major, well-capitalized stocks in recent memory. Health insurance giant UnitedHealth Group (UNH) is spiraling downward and there seems to be no bottom as the stock has lost ground for eight consecutive trading days, often by double-digit percentages.

UnitedHealth (NYSE:UNH) stock looks attractive - making it a good pick to buy at its current price of around $320.