Credit Migration Risk
Credit Migration Risk — Mark-to-market from rating transitions without default.
Definition
Credit Migration Risk refers to mark-to-market from rating transitions without default. Keep that definition fixed when comparing series, managers, or regimes — renaming the same tape does not create a new signal.
Why it matters
Spreads and default paths reprice risk appetite faster than many equity narratives admit. When mark-to-market from rating transitions without default shifts, related hedges, limits, and narratives usually need an explicit update rather than a quiet assumption.
Case
Suppose a desk is positioned for the opposite of what credit migration risk is saying. If mark-to-market from rating transitions without default moves against that book, the first question is not “is the story clever?” but whether size, hedges, and stop logic still match the observation.
How to read it
Separate idiosyncratic names from index beta; watch issuance windows and rating migration. Prefer a short written null hypothesis for Credit Migration Risk: what would falsify the current reading in the next window?