@amazedChile70717, The trading statement was positive prior the results. The results weren't bad either, although the share price dropped that day. It's possible that some people sold due to the absence of a dividend, or they wanted to lock in some of their impressive gains. The chart doesn't paint a long-term grim picture, it could be one of those healthy dip.
I don't have a position on ACL (JSE), I have a position on MT (the US version of ACL).