Shares of Omnicom Group Inc. OMC slipped 1.05% to $77.06 Thursday, on what proved to be an all-around mixed trading session for the stock market, with the S&P 500 Index SPX rising 0.07% to 6,363.35 ...

This was the stock's second consecutive day of gains.

Omnicom's recent price pullback and low forward P/E present a compelling value opportunity for long-term investors. Read the ...