What is the sentiment of this news? Please choose an answer from {strong negative/moderately negative/mildly negative/neutral/mildly positive/moderately positive/strong positive}.

Costco's stock, a warehouse club operator, has increased 7% over the last twenty-one trading days (one month) and currently stands near $560. It should be noted that the broader S&P500 returned a 5% growth during the same period.
moderately positive