Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: CBS 1_DAY_RETURN: -0.005518960299092 2_DAY_RETURN: -0.0199394694676874 3_DAY_RETURN: -0.0322236069076019 7_DAY_RETURN: -0.0418372796866655
The stock shows a consistent negative return trend over the specified periods.