Premarket losers: IFX -14.5%. CHK -13%. FRO -12.5%. PBR -8.5%. MT -8%. BTI -7%. RIO -6%. UBS...

|By:, SA News Editor

Premarket losers: IFX -14.5%. CHK -13%. FRO -12.5%. PBR -8.5%. MT -8%. BTI -7%. RIO -6%. UBS -6%. TOT -5%. SAP -5%.