Brad Katsuyama

“When we had the 'flash crash' in 2010, where the price of some stocks briefly fell to zero, high-frequency trading played a big role in that event.”

“Anyone with a pension or retirement is an investor in the stock market.”

“We built a market at IEX that does not sell certain types of technology advantages to high-frequency traders, and as a result, the high-frequency traders that didn't rely on buying those advantages trade on IEX.”

“The people who watch a movie like 'Wolf of Wall Street' and want to work on Wall Street are exactly the kind of people who shouldn't.”

“Society has changed so dramatically that it's empowered the individual, and technology has a lot to do with that. Years ago, if you had a bad experience at a restaurant, you could complain to the manager. Maybe you could picket. Now, you go online and write a review that may go viral.”