Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: GSK 1_DAY_RETURN: 0.0 2_DAY_RETURN: -0.0301746276322547 3_DAY_RETURN: -0.0405752439650743 7_DAY_RETURN: -0.0823061119671288
The stock shows a consistent negative return trend over the specified periods.