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: 0.0 2_DAY_RETURN: 0.0 3_DAY_RETURN: 0.0222551928783382 7_DAY_RETURN: 0.0652818991097921
The stock shows a consistent positive return trend over the specified periods.