Chevron (CVX -3%) shares remain under pressure after a report that an oil spill off Brazil...

|About: Chevron Corporation (CVX)|By:, SA News Editor

Chevron (CVX -3%) shares remain under pressure after a report that an oil spill off Brazil "could be 10 times bigger" than official estimates. Other stocks affected: Transocean (RIG -4.9%), which reportedly operated the CVX well; Petrobras (PBR +0.4%), which owns a 30% stake in the well; Clean Harbors (CLH +2.2%), which offers environmental cleanup services on customer sites.