It's an allegation. He's basically referring to Direct Edge's Hide-not-slide order type. The only equities exchange I know of that lets you jump the queue is N

It's an allegation. He's basically referring to Direct Edge's Hide-not-slide order type. The only equities exchange I know of that lets you jump the queue is NYSE where DMMs and floor brokers can join a level and participate along with the front of the electronic book. DMMs have negative obligations though.