Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Siemens 1_DAY_RETURN: -0.0039824771007565 2_DAY_RETURN: -0.0039824771007565 3_DAY_RETURN: -0.0039824771007565 7_DAY_RETURN: -0.0017921146953404
The stock shows a consistent negative return trend over the specified periods.