> On the other hand, due to advancements in trading tech, I've seen commissions drop to zero. I've see better price discovery available to professional and reta

> On the other hand, due to advancements in trading tech, I've seen commissions drop to zero. I've see better price discovery available to professional and retail traders and there has been a lot of people introduced to stock markets because it was accessible via their phone. Ok, but how much of that is due to HFT specifically? Or more relevantly to the article, ultra-low latency HFT? A bit of the price discovery, maybe, but retail commissions hit zero because Schwab decided to finish turning into a bank and their competitors had no choice but to follow.