tranche
A portion of a structured financial product with different risk and return characteristics, from senior (lowest risk, lowest return) to equity (highest risk, highest return).
Example
“The CDO's senior tranche was rated AAA while the equity tranche bore first losses — same underlying assets, very different risk profiles.”
Memory Tip
TRANCHE = a SLICE of a structured product. Senior = safe slice. Equity = risky slice.
Why It Matters
Understanding tranches helps you assess the risk-return tradeoff when investing in structured products or mortgage-backed securities. Knowing which tranche you hold determines whether you get paid first during defaults and what returns you can expect, which directly affects your investment safety and income potential.
Common Misconception
Many people assume all tranches of the same structured product perform similarly, but senior tranches are paid back first while equity tranches absorb losses first. This means equity tranches can lose money even when senior tranches are fully protected, making the risk levels fundamentally different despite being part of the same product.
In Practice
Consider a mortgage-backed security with 1 billion dollars in mortgages divided into three tranches: senior tranche of 800 million dollars receiving 3 percent interest, mezzanine tranche of 150 million dollars receiving 6 percent interest, and equity tranche of 50 million dollars. If 100 million dollars in mortgages default, the equity tranche absorbs the full loss and becomes worthless, while senior and mezzanine tranches remain fully protected and continue receiving their interest payments.
Etymology
From French 'tranche' (slice, piece). Each SLICE of a structured product has different risk characteristics.
Common Misspellings
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See Also
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