Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Cisco 1_DAY_RETURN: 0.0 2_DAY_RETURN: 0.0 3_DAY_RETURN: -0.0129788570232364 7_DAY_RETURN: -0.030353778522085
The stock shows a consistent negative return trend over the specified periods.