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: -0.0113601473748848 2_DAY_RETURN: -0.0248695118206938 3_DAY_RETURN: -0.0433937160986592 7_DAY_RETURN: -0.039811687647119
The stock shows a consistent negative return trend over the specified periods.