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: 0.021551724137931 2_DAY_RETURN: 0.0043103448275862 3_DAY_RETURN: -0.021551724137931 7_DAY_RETURN: 0.0
The stock shows a neutral return trend over the specified periods.