Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Groupon 1_DAY_RETURN: 0.0178571428571429 2_DAY_RETURN: -0.010204081632653 3_DAY_RETURN: -0.0025510204081632 7_DAY_RETURN: -0.010204081632653
The stock shows a consistent negative return trend over the specified periods.