Yes, Rich. As is typically the case, I'm not going to comment on any specific acquisition opportunities, but, as I said in my prepared remarks, we do believe there are opportunities out there and you can look at the track record we've got. They're not all necessarily $1 billion-, $2 billion-opportunity. They're technology opportunities to add to what we've got. They're asset class opportunities to add to the products that we offer to our customers. So if you look at the history of what our acquisitive activity has been, I think it gives you a good view into what we're thinking about. And a point of the remark was that we still think those opportunities exist. And so we believe that's appropriate for us to have capital available for those opportunities. And shifting to your second part of your question, just with regards to generally how we think about the cash that's available to us, I've said in the past that you could think of our kind of our cores or 0-level cash balance in the $250 million to $350 million-range. That's kind of our comfortable operational cash. You spoke a little bit about the U.K. versus U.S. We generate, now, less than 1/2 of our income and 1/2 of our cash flows come from the U.S. So we do have a lot of our cash flows outside the U.S. And as you know, the U.K. recently agreed that their tax rate would come down to 24%, and it's on a glide path to 23% versus the U.S. at 35%. So for me, to bring that cash back to the U.S. is not sufficient for our shareholders or for our company. And then as you'll likely know, you probably haven't dug through the details yet in the quarter, but as the regulatory capital requirements are being set, we increased our restricted cash in the quarter by about $30 million, reflective of increased regulatory capital requirements that we've seen. So we take into consideration all of those factors as we think about the use of our cash. And then, as I mentioned in my remarks, we focus on what we're able to do with it. And generating 19% returns on invested capital against a lack of 10%, we think we're flexed that we do a pretty good job being good stewards of our shareholders' capital.
Richard H. Repetto - Sandler O'Neill + Partners, L.P., Research Division: Understood. It is a lot of cash, though, Scott. Anyway, the one follow-up I have, Jeff, the move from OTC energy to the listed -- a bold move. And I guess the question is, will you still connect? Will you still have energy SEF? And as a clearinghouse, will you still clear -- and what are the -- do you see this as a broad trend of the OTC markets, whether it be energy or other asset classes, moving into the listed environment? Yours was sort of unique, I'd think.