Companion Tranche
Companion Tranche is a securitization class defined by its place in the payment and loss-allocation structure, which determines priority, expected maturity and credit protection.
Companion Tranche is a securitization class defined by its place in the payment and loss-allocation structure, which determines priority, expected maturity and credit protection.
How Companion Tranche works
In practice, the result depends on the transaction documents, collateral performance, payment priority and the triggers that can redirect cash flows. Analysts therefore connect Companion Tranche to the waterfall, enhancement levels and servicing assumptions rather than viewing it in isolation.
Why it matters in markets
Companion Tranche matters because structured products redistribute the timing and severity of collateral losses across different investor classes. The legal waterfall can therefore be as important as the average quality of the underlying loans.
How to interpret Companion Tranche
Interpret Companion Tranche through the transaction waterfall and collateral assumptions. Check which class absorbs losses first, which triggers redirect cash, how quickly principal can return and whether servicing or prepayment behavior changes the expected path.
Limits and context
Companion Tranche can vary materially across deals. Prospectuses, pooling and servicing agreements, indentures and trustee reports determine the actual mechanics; generic market definitions should not replace transaction-level analysis.
BondStats educational market reference. Definitions describe common market usage and are not investment, legal, accounting or regulatory advice.