Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: IBM 1_DAY_RETURN: -0.015978516280631 2_DAY_RETURN: -0.0165156092648538 3_DAY_RETURN: -0.0221550855991942 7_DAY_RETURN: -0.0171869754951326
The stock shows a consistent negative return trend over the specified periods.