Categorize the input news's emotional tone into one of three groups.
Options: negative, positive

Amazon.com (NasdaqGS: AMZN) shares surged in response to a surprisingly upbeat fourth quarter earnings report, lifting consumer discretionary sector-related exchange traded funds. On Friday, the Consumer Discretionary Select Sector SPDR (NYSEArca: XLY) rose 3.4%, the Vanguard Consumer Discretionary (NYSEArca: VCR) gained 3.3%, and the Fidelity MSCI Consumer Discretionary Index (NYSEArca: FDIS) was up 3.2%.
positive