The initiation of coverage by BMO Capital with a Market Perform rating suggests a neutral outlook on Wayfair's stock, indicating that the stock is expected to perform in line with the market or sector. The price target of $57 provides a reference point for investors, but since it is not a strong buy or sell rating, the immediate impact on the stock price may be moderate. The importance is significant as analyst coverage can affect market perception, but the neutral stance tempers the potential impact.