Yes, sure. Look, I mean, the easiest and most I think on point answer is that, in the retail business, the whole idea behind the retail business, which smarter guys than me created 30-odd years ago was that you're going to have smaller orders, Chris, that are typically not correlated with the wider market. So as a market maker, you can absorb those markets - those orders, excuse me, internalize them, price improve them and give a retail investor as compared to an institutional investor that will have much larger desires and enhanced experience, better service, et cetera, you kind of get that. In the quarter, and it might be the mix of - as you say, the mix of the business, maybe more institutional investors were sliding into “retail brokers”, et cetera. In the quarter, you have more flow that tended to be more correlated with the larger marketplace, and that makes it more of a challenge for a market maker. We don't have some magic Elixir in terms of - if the stock continues to go up during the day, as I've said many times, that is the yin and the yang of being a market maker. Under the current ecosystem construction, we don't have a choice. We need to take all the flow that comes our way, small, medium and large, regardless of what the stock is doing and many times, that results in negative selection and a negative P&L with regard to that stock for a day, a week, a month, whatever it is. And so that's probably the best answer I can give you. What I can tell you, since 2017, when we first acquired the Knight customer business, we've seen quarters like this when we've seen quarters where the opposite is true, where the flow is a lot softer, the spread sum is significantly larger than we've had outsized quarters. So again, I repeat the mantra, which is, we look at this business over an incredibly long period of time, and we contended to be very bullish about it. In terms of enhancements and investments we've made to increase our monetization of the flow, it's what we've talked about historically. Obviously, we've done a lot of the re-platforming and migrating all of this flow to the legacy. Virtu infrastructure, which is lower latent and more performance. But in as well, we've enhanced significantly the internalization opportunities for that flow, right? So internalizing it against both our own non-customer market making flow, but also making it available to our institutional investors who are very, very keen to get access to it. So all of those things, we've made significant progress. And frankly, it has borne considerable fruit in this quarter and prior quarters. But again, we are somewhat beholden to the outside world and the opportunities presented.