Compare the stock returns over 1, 2, 3, and 7 days after being mentioned in the tweet. Highlight any significant patterns or trends.
STOCK: Viacom 1_DAY_RETURN: -0.0166453265044814 2_DAY_RETURN: -0.0038412291933418 3_DAY_RETURN: -0.0166453265044814 7_DAY_RETURN: -0.0166453265044814
The stock shows a consistent negative return trend over the specified periods.