The AAA-to-D rating model

A rating is only useful if it means the same thing everywhere. We grade every asset on a familiar AAA-to-D scale, but the grade is not an opinion — it is the outcome of putting each asset through the same repeatable test and seeing how it behaves.

That test runs the asset inside a real portfolio construction, judging it on how it actually contributes rather than on how it looks in isolation. The work is rerun hourly across more than a thousand assets, so a grade reflects current conditions instead of a decision someone made weeks ago. Nothing here rests on a gut call; the same procedure produces every letter.

Because the scale is shared and the method is fixed, a grade is directly comparable from one asset to the next and from one hour to the next. When a rating changes, it changes for a reason you can trace back to the data, not to a mood.