穆同学2024-01-18 23:38:30
投资级债券比高收益债券对credit migration risk 更敏感?
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梁雪2024-01-20 08:46:58
同学你好,
Credit migration是债券公开评级的变化对于债券价格的影响,通常下调评级比上调对于价格影响更大。
Investment-grade bonds generally have higher credit ratings, lower default risk, and higher recovery in the event of default and offer lower all-in yields to maturity. High-yield bonds usually have higher yields to maturity as a result of lower (sub-investment or speculative grade) credit ratings, higher default risk, and lower recovery in the event of default.
图中显示,高评级债的one notch downgrade(%)更大,低评级债的default probability(%)更大。因此投资级债,更关注spread risk,主要用spread duration衡量;投机级债,更关注 default risk,用市场价格衡量。
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