CMBX Indexes Definition
What Are CMBX Indices? CMBX Indices are a group of financial indexes that track the commercial mortgage-backed securities (CMBS) market. These indexes represent 25 tranches (French word meaning “slice”) of CMBS, each with a different credit rating. Because mortgage-backed securities are illiquid and non-standardized in the over-the-counter (OTC) market, they often lack the transparency and