Why Are Cars.com Shares Trading Higher Today?

Stock photo of a car key. StockSnap/Pixabay

Cars.com Inc. will replace DSP Group Inc. in the S&P SmallCap 600 before the opening of trading on Dec. 2.

S&P MidCap 400 constituent Synaptics Inc. is acquiring DSP Group in a deal likely to be completed by December 2.