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: 0.0035111185420498 2_DAY_RETURN: -0.0041799030262497 3_DAY_RETURN: -0.0041799030262497 7_DAY_RETURN: 0.0123725129576992
The stock shows a consistent positive return trend over the specified periods.