Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Nissan 1_DAY_RETURN: 0.0 2_DAY_RETURN: 0.0008900756564307 3_DAY_RETURN: 0.0031152647975077 7_DAY_RETURN: -0.0026702269692923
The stock shows a consistent negative return trend over the specified periods.