Robert Greifeld
Analyst · Sandler O'Neill
Good question, Rich, and obviously, something we pay close attention to. And I think when you see high-frequency floating around as a term in the media, it's hard to actually know exactly what people are talking about. So obviously, it's not a defined legal term. But I would say this, we, in our mind, when we look at what's happening in Europe and what's talked about in the U.S., we zero in on a definition of high-frequency which have the following attributes: One is the trading is done on a proprietary basis. Two, it utilizes low-latency technology in a data center of a market center. The traders tend to have no inventory, tend to be flat at the end of each trading day. They have a short average order life, under 1 second, and a high order-to-trade ratio above 100. And they are not designated market makers with market maker obligations. Now when we take that definition and compare it to our equity business on a global basis, not just the U.S. but U.S. and Europe, inclusive of colocation fees, that represents in and around $50 million worth of revenue to NASDAQ OMX. So clearly, it's a customer base we care about. We have a fundamental belief that they add liquidity to the market, but to the extent there are rule sets that affected high-frequency trading by 10% or 15% or 20%, it's clearly not material to us. But I would say that what we're seeing, which I think will be good for the overall equity market, is high-frequency trading saying we want to step up into an obligated market-making world. And that is what we need in the equity marketplace. So if you look at the equity marketplace today in their very actively traded stocks, the market has never been better. Deep liquidity, very narrow spreads. But as you walk down the market cap curve, you see that our spreads get wider and liquidity gets less. So we have a large number or too large of a number of public companies that really do not have adequate market-making support, adequate, constant liquidity. So certainly, it's going to be our effort and others to take out of this high-frequency debate a positive outcome where these participants become market makers, become obligated and provide higher levels of support to the lower end of the marketplace. So we see this as opportunity. We see it actually happening as we're speaking today, but it's also important to define clearly what we mean by high-frequency trading and understand what it is in the context of, one, our overall operation and, two, the operation of the equity marketplace.
Richard H. Repetto - Sandler O'Neill + Partners, L.P., Research Division: It seems like you were very well-prepared for that question.