Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Costco 1_DAY_RETURN: -0.0039472008828148 2_DAY_RETURN: -0.0105258690208396 3_DAY_RETURN: -0.0105258690208396 7_DAY_RETURN: -0.0230041169729638
The stock shows a consistent negative return trend over the specified periods.