Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: American Express 1_DAY_RETURN: -0.0094174129812574 2_DAY_RETURN: -0.0205890499492198 3_DAY_RETURN: -0.0205890499492198 7_DAY_RETURN: -0.0120025851721909
The stock shows a consistent negative return trend over the specified periods.