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: -0.0087186520376175 2_DAY_RETURN: -0.0081308777429466 3_DAY_RETURN: -0.0081308777429466 7_DAY_RETURN: 0.0225313479623824
The stock shows a consistent positive return trend over the specified periods.