Stocks briefly added to gains on Thursday after pending sales of existing U.S. homes unexpectedly rose in June from May.

The Dow Jones industrial average <.DJI> was up 7.95 points, or 0.06 percent, at 12,310.50. The Standard & Poor's 500 Index <.SPX> was up 0.94 points, or 0.07 percent, at 1,305.83. The Nasdaq Composite Index <.IXIC> was up 6.13 points, or 0.22 percent, at 2,770.92.

(Reporting by Caroline Valetkevitch; Editing by Padraic Cassidy)