Nothing unusual happened. People who have owned this for a while had nice gains, and some are cashing in their profits. That is also evident by the unusually high number of shares traded. A very normal and OK event. This stock has nothing but further upward potential, as far as I can tell because 1. the price of the raw materials they use has dropped, making continued profitability possible 2. their expenses on their new equipment is being paid down, again helping future profitability. SP estimates this stock as a $ 19 stock, but I can easily see this tock breaking $ 20 later this summer and I like it.