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: 0.0 2_DAY_RETURN: -0.0067980022197557 3_DAY_RETURN: -0.0185904550499445 7_DAY_RETURN: -0.0342674805771365
The stock shows a consistent negative return trend over the specified periods.