A good strategy because at least this way will definitely be done if they realize it, when they have calculated it of course it will be easy to do because some of them will still hold it with the assumption to get a better profit, whereas if they sell it at that time they are already get a good profit from buying it at a lower price. Indeed, it all depends on the target and calculations done, but if it's just based on greed I think there will only be regret in the end.