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: -0.0072412155745489 2_DAY_RETURN: -0.0032051282051281 3_DAY_RETURN: -0.013770180436847 7_DAY_RETURN: -0.0239791073124406
The stock shows a consistent negative return trend over the specified periods.