I often see a stock in after hours dropped tremendously but when I look at the time and sales it says only 1 share was sold .. What does that mean ? Im shorting a stock called MAMA at 4.24 and it has dropped to 4.04. But when I checked on time and sales it was only 1 share sold at that price.. So what does that mean and why does this happen so often? Thank you for any help and no im not looking for insider information...