Tuya's Q4 earnings report showed it met EPS estimates and reported a substantial increase in revenue compared to the previous year. Historically, Tuya's stock price increased by 7% following a Q3 earnings beat, indicating that meeting or exceeding earnings expectations can positively impact its stock price. However, since the Q4 EPS was only met and not exceeded, the immediate impact on the stock price might be neutral, reflecting investor expectations being met but not surpassed.