Following are lists of January's best and worst-performing stocks in the S&P 500 SPX. And further down is a close look at performance and valuations for the index and its 11 sectors. All investment ...

The hack of a company that helps schools track tens of millions of students appears to be the largest breach of American children’s personal information to date, ...

An executive admitted during a meeting that a breached account had failed to use multi-factor authentication, according to ...