European shares rise after solid earnings updates, RBS slumps

European shares rose on Friday, helped by solid earnings updates from companies including cement maker LafargeHolcim, but Royal Bank of Scotland slumped in an otherwise mostly positive banking sector after reporting wider losses in the first half. The pan-European STOXX 600 index rose 0.4 percent by 0830 GMT but remains on track for its first week of declines in four, weighed down by heavy losses among bank stocks earlier in the week following the release of Europe-wide stress tests. "LafargeHol