Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: AstraZeneca 1_DAY_RETURN: -0.0076442721791559 2_DAY_RETURN: -0.0075366063738156 3_DAY_RETURN: -0.0075366063738156 7_DAY_RETURN: -0.0176571920757967
The stock shows a consistent negative return trend over the specified periods.