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: -0.0063272656478147 2_DAY_RETURN: -0.0149907524578994 3_DAY_RETURN: -0.0144066971673318 7_DAY_RETURN: -0.0086634868100846
The stock shows a consistent negative return trend over the specified periods.