It would likely only work if the instrument being invested in was small and illiquid (i.e., that pumping it up would actually move the price). Otherwise it woul

It would likely only work if the instrument being invested in was small and illiquid (i.e., that pumping it up would actually move the price). Otherwise it would be a waste of time. I've really only heard of this in penny stocks which are illiquid. This would not work in liquid markets like rates, fx or equity indexes.