Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Walmart 1_DAY_RETURN: 0.003458366586858 2_DAY_RETURN: 0.0033253524873636 3_DAY_RETURN: -0.0017291832934292 7_DAY_RETURN: -0.0031923383878692
The stock shows a consistent negative return trend over the specified periods.