A merger between Casino and Carrefour would be a positive for the much lower-rated Casino bonds and a negative for Carrefour's, but any potential combination would probably be hit with antitrust issues, say analysts at ING. "At this stage it's difficult to assess how much truth the talk holds," says ING, after Carrefour denied making any such approach. Casino shares trade down 0.5% at EUR35.86, Carrefour trades up 0.3% at EUR16.64 - via WSJ