Learning Module 18 Asset-Backed Security (ABS) Instrument and Market Features
50 questions available
Credit enhancement is critical in ABS structures. Internal enhancements include overcollateralization (collateral value exceeds issued debt), excess spread (difference between collateral coupon and ABS coupon retained to absorb losses), and subordination/credit tranching (creating senior and junior tranches so junior tranches absorb first losses). External enhancements include letters of credit, guarantees, and cash collateral accounts. The waterfall or priority-of-payments governs how cash flows and losses are allocated across tranches.
Key Points
- Covered bonds remain on issuer balance sheet and provide dual recourse.
- Redemption regimes: hard-bullet, soft-bullet, conditional pass-through.
- Internal credit enhancements: overcollateralization, excess spread, subordination.
- External enhancements include letters of credit and guarantees.
- Waterfall dictates order of payments and loss absorption.
Collateralized debt obligations (CDOs) issue securities backed by diversified pools of debt (loans, bonds, other CDOs). The dominant modern form is the collateralized loan obligation (CLO), backed by leveraged bank loans. CLOs are actively managed: a collateral manager buys and sells assets during a ramp-up and ongoing management period, subject to numerous tests and covenants (overcollateralization tests, concentration limits, rating triggers). CLO capital structures replicate a firm's capital structure with senior, mezzanine, and equity tranches. Equity tranche holders are residual claimants on excess cash flows and bear the most risk but can earn high returns if the manager outperforms. CLOs are subject to non-linear risks: manager skill, collateral default, structural tests that can redirect cash flows, and potential deleveraging if tests fail.
Key Points
- Non-mortgage ABS often include revolving periods and reinvestment mechanics.
- Rapid amortization protects investors when replenishment fails.
- Solar and whole-business ABS use multiple credit enhancements for rating.
- CDOs and CLOs are actively managed, with coverage and OC tests.
- CLO equity tranches are residual and sensitive to manager performance.
Key Points
- RMBS can be agency (guaranteed) or non-agency (private, enhanced).
- Pass-throughs pass principal/interest/prepayments net of servicing fees.
- Prepayment risk: contraction (shortening) and extension (lengthening).
- Time tranching and CMOs allocate prepayment exposure across tranches.
- Tranche types: Z, PO, IO, PAC, support, floaters, inverse floaters.
Key Points
- CMBS often have concentrated pools; single-loan deals heighten risk.
- Commercial loans are usually balloon loans; balloon risk is extension risk.
- Call protection: lockouts, prepayment penalties, defeasance mechanisms.
- Key credit metrics: LTV and DSCR (NOI / debt service).
- Legal/jurisdictional loan enforcement rules materially affect recoveries.
Questions
Which redeeming feature of covered bonds postpones acceleration of payments until a later final maturity date, typically up to one year beyond the original date?
View answer and explanationWhich internal credit enhancement increases the collateral amount relative to the issued securities so losses can be absorbed before investors suffer principal loss?
View answer and explanationDuring a credit card ABS's revolving period what typically happens to principal repayments from cardholders?
View answer and explanationA CDO backed primarily by leveraged bank loans and actively managed with overcollateralization tests is commonly called what?
View answer and explanationWhich tranche typically absorbs initial losses in a securitization waterfall?
View answer and explanationIf a securitized pool has EUR1,200 million of collateral but issued EUR1,000 million of ABS, the ratio illustrating extra collateral is called what?
View answer and explanationWhich of the following is an external credit enhancement?
View answer and explanationA mortgage pass-through security's coupon paid to investors equals the pooled mortgages weighted average coupon minus which type of fee?
View answer and explanationWhich tranche pays only interest from the pool and no principal and thus is especially sensitive to prepayment acceleration?
View answer and explanationIf mortgage prepayments accelerate because market rates fall, what risk is primarily realized by MBS investors?
View answer and explanationWhich legal structure is used to separate the collateral from the originator and isolate creditor claims in a securitization?
View answer and explanationWhich of the following best explains why some non-agency RMBS required credit enhancements prior to the global financial crisis?
View answer and explanationA solar ABS backed by residential solar loans shows total collateral carrying value EUR144 million and ABS issuance value EUR54 million. The collateral multiple equals approximately:
View answer and explanationWhich of the following best describes a Planned Amortization Class (PAC) tranche?
View answer and explanationWhich metric equals property net operating income divided by annual debt service and is crucial for CMBS underwriting?
View answer and explanationWhich of the following increases when a mortgage loan's outstanding balance falls while property value rises?
View answer and explanationA CLO manager fails an overcollateralization test. What structural consequence commonly occurs?
View answer and explanationWhich tranche in a sequential-pay CMO receives principal only after the prior tranche is fully repaid?
View answer and explanationWhich risk is most relevant to the investor in a principal-only (PO) tranche when interest rates fall?
View answer and explanationWhich of the following most reduces reinvestment risk for an investor in a securitization tranche?
View answer and explanationWhich structure is characterized by the issuer retaining the collateral on its balance sheet while ringfencing eligible loans into a cover pool?
View answer and explanationWhich feature is used in CMBS to permit prepayment only if the borrower acquires a government-securities portfolio replicating remaining cash flows?
View answer and explanationWhy do covered bonds generally yield less than otherwise similar ABS?
View answer and explanationWhich tranche would a pension fund with a long-term horizon likely choose in a sequential-pay CMO with tranches maturing in 5, 15, and 30 years seeking higher returns?
View answer and explanationIn a securitization waterfall example, total losses on collateral equal EUR70 million; junior tranche D is EUR25 million, tranche C EUR50 million, tranche B EUR100 million. Which tranche(s) are wiped out and which tranche shows partial loss?
View answer and explanationWhich statement is true about agency RMBS in the United States?
View answer and explanationWhich is a likely consequence if a CMBS loan reaches maturity and the borrower cannot refinance or sell the property to satisfy the balloon payment?
View answer and explanationAn investor purchasing a tranche that is rated AAA in a CLO is most likely to accept which of the following characteristics?
View answer and explanationWhich of the following is most likely to reduce an issuer's leverage after selling loans to an SPE?
View answer and explanationWhich of the following ABS features specifically helps investors when a securitized pool is first issued and the trust acquires additional qualifying assets post-closing?
View answer and explanationWhich of these statements about CMBS prepayment risk is correct?
View answer and explanationAn investor wants exposure only to principal prepayments from a mortgage pool. Which security should they choose?
View answer and explanationWhich aspect of securitization most directly helps banks expand origination beyond their balance sheets?
View answer and explanationWhich of the following statements about CLO collateral pools is true?
View answer and explanationWhich event would most likely trigger early amortization (rapid amortization) in a credit card ABS during the revolving period?
View answer and explanationWhat is the primary credit risk investors face in a true-sale securitization (SPE issues ABS)?
View answer and explanationWhich of the following is a defining characteristic of a collateralized mortgage obligation (CMO)?
View answer and explanationFor a securitization with four tranches A (senior), B, C, D (junior), which of the following best describes how ratings are typically assigned to each tranche?
View answer and explanationWhich of the following best describes the legal protection investors obtain from an SPE structure?
View answer and explanationIf a CLO was created with USD700 million of debt promises and requires USD840 million of loan purchases, the overcollateralization ratio equals:
View answer and explanationWhich securitization investor benefit is best described as the ability to tailor interest rate exposure, credit exposure, and maturities to specific needs?
View answer and explanationWhen a mortgage pass-through pool has both scheduled principal and unscheduled prepayments, which single statistic gives an estimate of when the MBS can be expected to be paid off on average?
View answer and explanationWhich of the following is NOT commonly a role of the servicer in an ABS transaction?
View answer and explanationWhich characteristic most distinguishes CMBS from RMBS in terms of loan pool composition?
View answer and explanationWhich of the following best captures why investors might prefer agency RMBS to non-agency RMBS?
View answer and explanationWhich term describes the difference between the coupon earned on collateral and the coupon paid on ABS securities that can be used to absorb shortfalls?
View answer and explanationAn RMBS pool's weighted average coupon (WAC) is 4.5% and servicing fees are 0.5%; what pass-through coupon does that imply ignoring other fees?
View answer and explanationWhich statement about CLO equity tranches is most accurate?
View answer and explanationWhich of the following securitization documents describes the transaction structure, priority of payments, and credit enhancements offered to investors?
View answer and explanationWhich of the following is the best summary of a covered bond's investor recourse?
View answer and explanation