How much a stock's price changes over time is important for most investors, since price performance can both impact your investment portfolio and help you compare investment results across sectors and ...

At Yahoo Finance, you get free stock quotes, up-to-date news, portfolio management resources, international market data, social interaction and mortgage rates that help you manage your financial life.

UnitedHealth Group Incorporated (NYSE:UNH) provides healthcare coverage, data consultancy, and software services. It operates through the OptumRx, OptumInsight, OptumHealth, and UnitedHealthCare ...