1. You cannot place orders for the sake of placing an order. It must be placed with the intention of getting filled. I'm summarizing here but this is generally

1. You cannot place orders for the sake of placing an order. It must be placed with the intention of getting filled. I'm summarizing here but this is generally the law. 2. Placing orders causes prices to move. This is how the markets work. So if you do #1 with the intention of #2, that's market manipulation.