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: -0.0042176815036239 2_DAY_RETURN: -0.0112608001310347 3_DAY_RETURN: -0.0112608001310347 7_DAY_RETURN: -0.0390237909995495
The stock shows a consistent negative return trend over the specified periods.