New York Fed reports highest dysfunction in US high-grade corporate bond market in three years

Something is quietly breaking in the corner of finance that’s supposed to be boring. The New York Federal Reserve’s Corporate Bond Market Distress Index, or CMDI, just flagged its highest level of dysfunction in the US investment-grade corporate bond market since November 2023. What the CMDI is actually telling us The CMDI was launched by the New York Fed in June 2022 as a diagnostic tool for the corporate bond market. It aggregates data from both primary issuance, meaning new bonds being sold, and secondary-market trading, meaning existing bonds changing hands. In July 2026, the investment-grade sub-index of the CMDI surged to its highest reading since November 2023. The overall CMDI reading stayed relatively flat through July. That means the stress isn’t everywhere. It’s concentrated specifically in the high-grade segment, the bonds issued by companies with strong credit ratings that typically have no trouble borrowing money. The CMDI has a solid track record of spotting trouble early. The index retroactively captures the stress patterns from the 2008-09 Global Financial Crisis and the market seizure in early 2020 when COVID-19 first hit. What investors should watch from here The...