Yes. Thanks, Tom. And David, thank you for your question. As a regular matter of course, we take a disciplined approach to investing and thoroughly look at the -- managing both the risk and return trade-offs. We do that both directly in the investment department, but then that's highly integrated with the way we think about return and risk opportunities across the firm, as Tom had mentioned. One of the key things that we do is, first, we have a -- what I believe to be a strong team of about 400 investment professionals and -- that are deeply experienced. And we are in a number of different markets and look at price action, fundamental, economic drivers, technical observations across those markets. We also bring in, on a regular basis, keen insight from people from the outside, whether that's from our dealer relationships, whether that's via specific consultants or economic research teams that we have subscriptions to and try and formulate, at any point in time, the best risk return trade-off for the portfolio, especially given the business lines that we're associated with. As Tom mentioned, if you -- candidly, if you go back a little more than a year ago, we started to see that the return per unit of risk, as we perceived it in the marketplace, was flattening out, and we became a little bit more concerned about whether investment markets offer the best opportunity. What transpired since then is that the Fed became pretty active last year, as we've all seen. We took that as an opportunity to add duration to the portfolio, which is paying benefits today. So it's tantamount to our desire to be proactive with our investment portfolio and integrate it to the rest of the firm. As we moved into the end of this year, one of the things that we noticed is that there was a limit to what the central banks could do to continue to push on returns of growth assets or risky assets. We thought that what we had observed in 2019 is not much earnings growth, and there is a fair amount of multiple growth. And we just thought that, that was likely coming into the end. As Tom said, we really didn't predict that there's going to be an event. But the one thing we all recognize as an enterprise that if there was an event, we weren't really giving much compensation for that. So we incorporated this equity trade in February, albeit at very good levels. The way that we accomplish this on a daily -- on a regular basis and quarterly, we sit down in an investment group and we go through what we call a capital allocation process. And we spend 2, 3 days deeply looking at markets, and then we share that with the rest of the enterprise.