We are stress testing our plain-vanilla bond portfolio. If the Fed suddenly hikes rates by 200 basis points in a hypothetical scenario, walk me through how you would estimate the immediate P&L impact.

我们要对一个普通债券投资组合进行压力测试。假设在一个假设情景下，美联储突然加息200个基点，你将如何估算组合的即期损益影响？