Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Carrefour 1_DAY_RETURN: 0.0038461538461539 2_DAY_RETURN: -0.0014792899408283 3_DAY_RETURN: 0.01301775147929 7_DAY_RETURN: -0.0784023668639053
The stock shows a consistent negative return trend over the specified periods.