Quote from piezoe:
We may be in a period where the SEC is recognizing, and beginning to take seriously, the profound influence that algorithmic trading can have on the nature of markets. If so, that is a first step toward bringing order out of chaos and leveling the playing field. We can't yet know whether constructive further steps will follow. That may depend on politics as well as reason. But we can say with some certainty that if the ones with the most influence and resources are being hurt by the present paradigm, changes will result. If they are not being hurt, than I wouldn't expect much of substance to result. The cynical position, though unhelpful, is often the correct one.