The decision by RBC Capital to maintain a 'Sector Perform' rating on Spirit AeroSystems Holdings while raising the price target suggests a positive outlook on the company's financial health and market position. This adjustment in the price target reflects an expectation of moderate growth or stability in the company's stock price, likely influenced by industry trends, company performance, or market conditions. The increase in price target can be seen as a signal of confidence in the company's future performance, potentially leading to increased investor interest and a positive short-term impact on the stock price.