You have an uncollateralized IRS with a corporate client on your book. The client gets downgraded and their credit spread instantly widens by 200 bps. What is the immediate impact on our CVA and today's P&L?

你的交易台上有一笔无抵押的利率互换（IRS），客户突然被降级，信用利差扩大了 200 个基点。这会对我们的 CVA 和当期利润（P&L）产生什么直接影响？