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: 0.024941084053417 2_DAY_RETURN: 0.0262175962293794 3_DAY_RETURN: 0.0480164964650432 7_DAY_RETURN: 0.0245483110761979
The stock shows a consistent positive return trend over the specified periods.