Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Citigroup 1_DAY_RETURN: 0.0340892025829703 2_DAY_RETURN: 0.0340892025829703 3_DAY_RETURN: 0.0340892025829703 7_DAY_RETURN: 0.039345247034089
The stock shows a consistent positive return trend over the specified periods.