Learning Module 17 Fixed-Income Securitization

50 questions available

Overview and Benefits of Securitization5 min
Securitization pools financial assets (loans, receivables, leases, mortgages) and issues new securities backed by those pools. The originator sells assets to a bankruptcy-remote special purpose entity (SPE) that issues asset-backed securities (ABS). The SPE structure isolates the collateral from the originator’s creditors, so investor repayment depends primarily on underlying borrower cash flows and any credit enhancements. Participants include the seller/depositor, SPE/issuer, servicer, trustee, underwriters, rating agencies, accountants, lawyers, and sometimes guarantors. Covered bonds differ from true securitizations because assets remain on the issuer’s balance sheet; covered bond investors have dual recourse on the cover pool and the issuer’s unencumbered assets.

Securitization delivers benefits: for issuers, off-balance-sheet funding, capital efficiency, fee income, and expanded lending capacity; for investors, tailored risk/return and maturity choices and enhanced liquidity; for markets and economies, improved liquidity, diversified funding channels, and capital allocation efficiency. Examples include whole-business securitizations, solar ABS, auto ABS, and corporate receivable securitizations.

Key Points

  • Securitization transfers assets to an SPE that issues ABS to investors.
  • SPEs aim to be bankruptcy-remote so investor cash flows depend on collateral.
  • Covered bonds keep assets on the issuer balance sheet and provide dual recourse.
  • Benefits accrue to issuers (capital efficiency), investors (tailored risk), and markets (liquidity).
ABS Structures and Credit Enhancement6 min
ABS structures vary by complexity. Pass-through securities pass payments proportionally to holders. Bonds with structural enhancements (tranching) create senior and subordinated classes that receive cash flows by priority. Mortgage-backed securities (MBS) are a large ABS market segment, divided into residential (RMBS) and commercial (CMBS). Collateralized mortgage obligations (CMOs) reallocate cash flows by time tranching to address prepayment risk. Non-mortgage ABS (credit card, auto, solar) differ by amortizing vs non-amortizing collateral and by revolving/lockout periods.

Credit enhancement reduces expected loss to investors. Internal enhancements include subordination/credit tranching (waterfall), overcollateralization (collateral larger than issued debt), and excess spread (margin between collateral coupon and security coupon). External enhancements include guarantees, letters of credit, and cash collateral accounts. These mechanisms determine ratings and investor remuneration. Tranching redistributes both credit and prepayment risk: junior tranches absorb first losses; senior tranches have lower LGD exposure and often higher ratings.

Key Points

  • Pass-through versus tranched ABS (senior/subordinated) allocate cash by priority.
  • Internal credit enhancements: subordination, overcollateralization, excess spread.
  • External enhancements: guarantees, LOCs, cash accounts.
  • MBS, CMOs, and non-mortgage ABS differ by collateral and payment mechanics.
Prepayment Risk and Time Tranching5 min
Prepayment risk stems from borrowers’ right to repay early or refinance. Contraction risk occurs when prepayments accelerate (maturities shorten, reinvestment risk increases); extension risk occurs when prepayments slow (maturities lengthen, higher rate discounting). Time tranching (sequencing, PACs, Z-tranches, PO/IO) redistributes prepayment exposure across tranches to meet investor maturity preferences. Sequential-pay CMOs allocate principal first to the shortest tranche until paid off; PAC tranches offer scheduled principal assuming prepayment stays within a collar and use support tranches to absorb deviation risk. Z-tranches accrue interest and defer payments until a set date.

Key Points

  • Prepayment risk has contraction (shortening) and extension (lengthening) components.
  • Time tranching creates tranches with different expected maturities to reallocate prepayment risk.
  • PACs and support tranches stabilize cash flows; Z-tranches defer interest.
  • PO and IO securities isolate principal or interest cash flows and react differently to prepayments.
Covered Bonds and CMBS Specifics6 min
Covered bonds retain loans on the bank balance sheet but ringfence them as a cover pool. They typically include overcollateralization, LTV eligibility criteria, cover pool monitoring, and redemption regimes (hard-bullet, soft-bullet, conditional pass-through) to protect investors. Covered bonds have dual recourse and often offer lower yields than comparable ABS.

Commercial mortgage-backed securities (CMBS) are backed by income-producing property loans. CMBS often include call protection at the structural or loan level through lockouts, prepayment penalties, or defeasance and are more like corporate bonds in behavior. Many commercial loans are balloon loans, creating balloon risk (a form of extension risk) if borrowers cannot refinance or repay at maturity. CMBS pools tend to be concentrated; therefore, single-loan defaults can significantly affect investors. Key credit metrics include LTV and DSCR (NOI divided by debt service).

Key Points

  • Covered bonds provide dual recourse and keep collateral on issuer balance sheet.
  • CMBS provide call protection and often feature balloon payments, raising extension/balloon risk.
  • CMBS pools can be concentrated, so investors must analyze individual loans and properties.
  • DSCR and LTV are critical for CMBS credit assessment.
CDOs, CLOs, Legal Considerations and Examples6 min
Collateralized debt obligations (CDOs) issue notes backed by diversified pools of bonds or loans. The most common modern form is the CLO, backed mostly by leveraged bank loans. CLOs are actively managed: collateral managers buy and sell loans, subject to coverage and concentration tests. CLO capital structures mimic firm capital stacks with senior, mezzanine, and equity residual tranches; equity captures excess returns but bears first-loss risk. Manager skill, covenants, and triggers (overcollateralization tests, single‑obligor limits) are central to credit performance. Legal frameworks and the success of a true sale to an SPE vary by jurisdiction; investors should review prospectuses, purchase agreements, trustee duties, and servicer obligations. Historical transaction examples (solar ABS, Royal Caribbean secured notes, Volkswagen auto ABS impact) demonstrate structuring responses to risk and market conditions.

Key Points

  • CDOs/CLOs redistribute diversified debt cash flows into tranches; CLOs are actively managed.
  • Collateral managers and covenant triggers affect cash allocation and deleveraging.
  • True-sale legal effectiveness and bankruptcy remoteness differ across jurisdictions.
  • Real-world examples highlight market, structural, and issuer-specific risks.

Questions

Question 1

Which party in a securitization purchases the assets from the originator and issues the ABS to investors?

View answer and explanation
Question 2

Which of the following is a main benefit of securitization for the original asset originator?

View answer and explanation
Question 3

In a typical securitization with tranches A (senior), B (mezzanine), C (junior), which tranche absorbs the first dollar of principal loss?

View answer and explanation
Question 4

Which internal credit enhancement is described by 'collateral in the pool exceeds the face value of issued bonds'?

View answer and explanation
Question 5

If a credit card receivable ABS has a three-year revolving period followed by a six-year amortization period, what happens to principal repayments during the revolving period?

View answer and explanation
Question 6

Which covered bond redemption regime delays payment acceleration until a new final maturity date (often up to one year later)?

View answer and explanation
Question 7

An investor buys a PO (principal-only) tranche in a CMO. If interest rates fall and prepayments accelerate, what is the most likely effect on the PO tranche value?

View answer and explanation
Question 8

Which statement best describes the 'true sale' legal objective in securitization?

View answer and explanation
Question 9

Which risk is most directly reduced by subordination in a securitization?

View answer and explanation
Question 10

An RMBS pool has WAC 4.50% and servicing fees of 0.50%. What is the approximate pass-through net coupon rate paid to securityholders (ignoring other fees)?

View answer and explanation
Question 11

Which security type typically remains on the issuer’s balance sheet and gives investors dual recourse?

View answer and explanation
Question 12

Which of the following is the best description of excess spread in securitization?

View answer and explanation
Question 13

Which tranche in a sequential-pay CMO receives principal payments first until retired?

View answer and explanation
Question 14

An investor wants protection from contraction risk (shorter life when prepayments accelerate). Which CMO tranche characteristic should they prefer?

View answer and explanation
Question 15

Which of the following best explains why agency RMBS typically have lower credit risk than non-agency RMBS?

View answer and explanation
Question 16

A solar ABS issue has EUR320 million of loans backing EUR300 million of notes (collateral = EUR320m, notes = EUR300m). What is the overcollateralization ratio (collateral divided by notes)?

View answer and explanation
Question 17

Which of the following best describes a CLO manager’s role?

View answer and explanation
Question 18

Which legal or structural feature most directly protects SPE assets from originator creditors in bankruptcy?

View answer and explanation
Question 19

In the context of ABS, what does 'expected loss' (EL) equal?

View answer and explanation
Question 20

A CMBS loan’s DSCR is 1.61x (NOI = 7.59m, debt service = 4.717169m). Which statement is correct?

View answer and explanation
Question 21

Which of the following is most likely to cause contraction risk to increase for an RMBS pool?

View answer and explanation
Question 22

Which of these is an example of an external credit enhancement?

View answer and explanation
Question 23

An investor is concerned about issuer bankruptcy risk of the originator after buying ABS. Which structural feature most directly mitigates this concern?

View answer and explanation
Question 24

Which ABS feature best helps institutional investors match long-term liabilities and improve liquidity compared with direct loan ownership?

View answer and explanation
Question 25

Which of these describes a Z-tranche in a CMO?

View answer and explanation
Question 26

A collateral pool has 45,000 car loans with an average balance of EUR22,222. What is the approximate outstanding principal balance of the pool?

View answer and explanation
Question 27

Which of the following most likely caused a spike in yield demanded on Volkswagen auto ABS in 2015?

View answer and explanation
Question 28

Which ABS type typically trades most like corporate bonds due to call protection?

View answer and explanation
Question 29

Which metric best indicates how soon an RMBS is likely to repay on average given expected prepayments?

View answer and explanation
Question 30

An investor buys a senior tranche in a securitization that is rated Aaa/AAA due to overcollateralization and subordination. Which factor would most likely cause rating agencies to notch the issue down relative to the issuer rating?

View answer and explanation
Question 31

If a mortgage loan is non-recourse, what ability does the lender typically NOT have after foreclosure?

View answer and explanation
Question 32

Which arrangement provides the most direct liquidity improvement for a bank originating many illiquid loans?

View answer and explanation
Question 33

A CLO is constructed with USD700m of debt promised to noteholders and USD840m of loan collateral purchased. What is the overcollateralization ratio?

View answer and explanation
Question 34

Which of the following is a primary difference between non-amortizing credit card collateral and amortizing auto loan collateral in ABS structures?

View answer and explanation
Question 35

Which statement about recovery rates by seniority is true according to historical data presented?

View answer and explanation
Question 36

Which statement best describes 'structural subordination'?

View answer and explanation
Question 37

Which of the following is LEAST likely to be a characteristic of a residential mortgage-backed pass-through security?

View answer and explanation
Question 38

Which of the following increases expected recovery for senior unsecured creditors in a securitization where a portion of collateral is pledged as security to senior secured creditors?

View answer and explanation
Question 39

Which product is most often used by banks to raise long-term funding while retaining loans on their balance sheet?

View answer and explanation
Question 40

A deal has CHF925m receivables and issues CHF900m ABS. What is the percent overcollateralization (collateral minus notes) divided by notes?

View answer and explanation
Question 41

Which of the following best explains why some non-agency RMBS were more fragile in the 2007–2009 crisis?

View answer and explanation
Question 42

Which of the following describes 'defeasance' in CMBS loans?

View answer and explanation
Question 43

Which tranche in a CLO typically earns equity-like returns and bears residual cash flow risk?

View answer and explanation
Question 44

Why must investors evaluate legal frameworks in jurisdictions where they buy ABS?

View answer and explanation
Question 45

Which of the following is most likely a reason a company would issue secured notes backed by specific vessels during a crisis (example: cruise lines during COVID-19)?

View answer and explanation
Question 46

Which securitized product commonly uses a pre-funding period to acquire additional qualifying assets after closing?

View answer and explanation
Question 47

Which of the following best describes 'balloon risk' in CMBS?

View answer and explanation
Question 48

A securitization’s prospectus typically includes which of the following?

View answer and explanation
Question 49

Which of the following is most likely to increase recovery rates on a subordinated bond in a securitization?

View answer and explanation
Question 50

An investor looks at two ABS: one backed by a concentrated pool of 3 large commercial loans and one backed by 1,000 small residential loans. Which statement is correct about relative idiosyncratic risk?

View answer and explanation