The reiteration of the 'Sector Perform' rating and maintenance of the price target at $270 by RBC Capital suggests a neutral outlook on Norfolk Southern's stock in the short term. This indicates that the analyst believes the stock is fairly valued at its current level, neither significantly undervalued nor overvalued. Therefore, the immediate impact on the stock price is likely to be minimal, as the market has likely already priced in the expectations set by previous analyses.