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: -0.0047459398267077 2_DAY_RETURN: -0.0051378064179038 3_DAY_RETURN: -0.0086646057386684 7_DAY_RETURN: -0.0118430792005921
The stock shows a consistent negative return trend over the specified periods.