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: -0.0384615384615384 2_DAY_RETURN: -0.0557692307692307 3_DAY_RETURN: -0.0846153846153846 7_DAY_RETURN: -0.1230769230769231
The stock shows a consistent negative return trend over the specified periods.