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: 0.0026565464895635 2_DAY_RETURN: 0.0152751423149905 3_DAY_RETURN: 0.0055028462998102 7_DAY_RETURN: 0.0078747628083491
The stock shows a consistent positive return trend over the specified periods.