European stocks turn negative as banks slip

PARIS Dec 15 (Reuters) - European stocks pared early gains and turned negative in morning trade on Tuesday, halting a three-session winning run as banking shares slipped while investors awaited key U.S. macro data.

At 0835 GMT, the FTSEurofirst 300 .FTEU3 index of top European shares was down 0.1 percent at 1,017.43 points, after hitting a one-week high earlier in the session.

Barclays (BARC.L) lost 2.3 percent, Banco Santander (SAN.MC) dropped 0.8 percent, and Credit Suisse (CSGN.VX) shed 1.2 percent. (Reporting by Blaise Robinson)