While looking for recent market crashes, I came upon 2010 Flash Crash. However, I am unable to understand what wrong the alleged perpetrator, Navinder Singh Sarao, did.
Entering an "order to sell stocks (or shares)" and "then cancelling those orders", should not a crime, should it? A trader (or an investor) can change his or her mind at any time before the order goes through.
I am not saying that nothing went wrong, but just trying to understand.