Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Hyundai 1_DAY_RETURN: 0.0234375 2_DAY_RETURN: 0.0390625 3_DAY_RETURN: 0.0390625 7_DAY_RETURN: -0.01171875
The stock shows a consistent negative return trend over the specified periods.