By Greg Morcroft, MarketWatch
NEW YORK (MarketWatch) — Here are some of Wednesday’s most active stocks:
Gainers
Shares of InterDigital Inc. /quotes/zigman/106986/quotes/nls/idcc IDCC +6.24% climbed 5.9%. Late Tuesday, S&P Dow Jones Indices said the company, which develops technology for advanced digital wireless telecommunications applications, will replace Quest Software Inc. /quotes/zigman/67280/quotes/nls/qsft QSFT -0.02% in the S&P MidCap 400 after the close of trading on Friday.