Yes - if you have better information than everyone else - or at least can extrapolate where the fair value of products are based on where other things are trading - then you would be able to make a bunch of money. On the other hand - many of these names kept flipping their circuit breakers on and off. So, not much volume may have traded at these "wrong" prices. I was expecting a lot of CEE (Clearly Erroneous Executions) to be raised this morning in all these ETFs - but I haven't seen it yet.