The U.S. stock market was now a class system, rooted in speed, of haves and have-nots. The haves paid for nanoseconds; the have-nots had no idea that… - Michael Lewis

The orders resting on BATS were typically just the 100-share minimum required for an order to be at the front of any price queue, as their only purpose was to tease information out of investors. The HFT firms posted these tiny orders on BATS—orders to buy or sell 100 shares of basically every stock traded in the U.S. market—not because they actually wanted to buy and sell the stocks but because they wanted to find out what investors wanted to buy and sell before they did it. BATS, unsurprisingly, had been created by high-frequency traders.

He now suspected that every human being who knew how high-frequency traders made money was making too much money doing it to stop and explain what was going on.

...these stories are a kind of beacon. By making stories full of empathy and amusement and the sheer pleasure of discovering the world, these writers reassert the fact that we live in a world where joy and empathy and pleasure are all around us, there for the noticing.