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: 0.0139709833422891 2_DAY_RETURN: 0.0229267418950385 3_DAY_RETURN: 0.0229267418950385 7_DAY_RETURN: 0.016299480566004
The stock shows a consistent positive return trend over the specified periods.