Business F723
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Business F723
Fixed Income Analysis
Week 8
CMBS and Asset Backed Securities
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Commercial Mortgage Loans
• Loans secured by income producing properties– Multifamily dwellings– Office buildings– Shopping centers– Hotels
• Are usually non-recourse loans
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Credit Approval
• 2 main ratings of the credit of an applicant– Debt to service coverage ratio (DSC); net
operating income to debt service charges– Loan to Value (LTV); amount of principal
outstanding compared to the present value of future net operating income
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Call Protection
• Most commercial mortgages do not allow free prepayments– Prepayment lockout– Defeasance– Prepayment penalty points– Yield maintenance charges
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Prepayment Lockout
• For a certain period of time, prepayments are not permitted
• Lockout periods are often 2-10 years
• Many loans with lockout periods also have other call protection that start once the lockout period ends
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Defeasance
• Second strongest form of call protection
• To prepay, the borrower must pay an amount great enough to replicate missed cash flows with treasury securities– Often used by municipal bond issuers
• Lenders may prefer getting prepayments as it increases the value of their loans
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Prepayment Penalty Points
• A fixed percentage charge on prepayments
• Similar to call premiums on bonds
• 5-4-3-2-1 is a common schedule, 5% penalty in year 1, dropping to 1% in year 5
• Penalty is paid even if interest rates are rising and the lender could benefit from the prepayment
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Yield Maintenance Charges
• Floating charges that make prepayments for refinancing unattractive
• The lower the general level of interest rates the higher the yield maintenance charges– Simple model, bullet model, single discount
factor, truncated interest difference model...
• Usually drop to zero if interest rates are at or above the coupon rate
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Balloons
• Commercial mortgages typically have a balloon maturity provision
• Lender may allow an extension if the borrower has difficulty refinancing, but charge a higher default interest rate– The possibility of default on the balloon
payment is called balloon risk and, with the above provision can be a form of extension risk
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Commercial MBS
• Commercial mortgage backed securities are backed by 1 or more commercial mortgages
• Can be issued by an agency (Ginne Mae, Freddie Mac, Fannie Mae)
• More often issued privately due to not qualifying for government loan guarantees
• Usually structured like CMOs
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Example CMBS
• From p. 321; National Bank
• 18 tranches rated AAA to BBB- or not rated
• Different default risk layers
• Senior tranches are sequential
• Floating rate tranches created without inverse floaters through use of swaps
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Balloon Risk in CMBS
• To offset balloon risk CMBS can include– Internal tail; a contractual obligation for the
borrowers to provide proof of refinancing efforts 1 year before maturity and a refinancing commitment 6 months before maturity
– External tail; sets the maturity of the CMBS longer than the maturity of the loans allowing for a work-out period in the event of delayed refinancing
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Clean-Up Call Provision
• Every CMBS transaction has a clean-up call provision that permits the bond classes that are outstanding to purchase the remaining mortgage loans in a trust.
• The purpose of clean-up call in all securitizations is to wind-down the transaction when the balance remaining in the transaction is too small to justify the ongoing administrative fees.
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Clean-Up Call Provision II
• Typically the cleanup call provision is limited to when the balance of mortgage loans in the mortgage pool represents 1% to 3% of the deal’s original balance of the trust.
• Usually the price at which the remaining loans can be repurchased is the outstanding balance of the mortgage loans plus accrued interest.
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Single Borrower Deals
• Single borrower/multi-property deals allow for some risk reduction through cross-collateralization and cross-default features
• To prevent the borrower from removing a good asset from the pool and letting the remainder go into default, there are often property release provisions
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Multi-Borrower Deals
• CMBS deals put together by conduits
• If the deal contains a single large loan in excess of $50 million and a large amount of smaller mortgages it is called a fusion conduit deal
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Services
• Can have a single servicer or multiple– Sub-servicer; collects cash and information– Master servicer; oversees the deal, verifies
details of the agreement, makes timely payment of interest and principal (even when there are late payments)
– Special servicer; deals with accounts more than 60 days overdue
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Analysis of Collateral
• Due to non-recourse basis the loans should be analysed as stand alone businesses– Performance indicators, LTV and DSC are
reported regularly– Each type of business has it’s own set of
associated risks, types of risk and amount of exposure are included in the prospectus
– Geographic distribution is also reported
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Stress Testing
• Various models can be used to determine the impact of various levels of default and prepayment experience on the different tranches
• Often done by analysts and bond ratings companies
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Asset Backed Securities
• Securities backed by pools of loans other than first lien mortgages are referred to as asset backed securities
• Major types include; automobile loans, credit card receivables, home equity loans, and manufactured housing loans
• Securitization not limited to loans; David Bowie royalties, parking ticket receivables
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Credit Risk
• Since these loans are not guaranteed, the investor faces credit risk
• Four factors to consider– Credit quality of the collateral– Quality of the seller/servicer– Cash flow stress and service structure– Legal structure
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Credit Quality of the Collateral
• Analysis of the credit quality of the collateral depends on the asset type
• Look at the borrower’s ability to pay and the borrower’s equity in the asset
• Examine the experience of the lenders and assess if the assets being sold have the same qualities
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Concentration Risk
• With a large number of borrowers in a pool there can be significant diversification
• If a few borrowers make up a large portion of the total pool this diversification can be lost, this is concentration risk
• Some ratings companies put limits on the maximum percentage from one borrower
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Credit Enhancement
• As with MBS, asset backed securities often include credit enhancement to get the credit rating the issuer desires– External enhancement; insurance, corporate
guarantees, letters of credit– Internal enhancement; reserve funds, over-
collateralization, senior/subordinated structure
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Quality of the Seller/Servicer
• Duff & Phelps, for example, reviews the following when evaluating servicers:– servicing history– experience– originations– servicing capabilities– human resources– financial condition– growth/competition/business environment.
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Cash Flow Stress and Payment Structure
• The cash flow payments that must be made are; interest and principal to investors, servicing fees, and any other expenses for which the issuer is liable
• Payment structure deals with payment priorities between tranches… is the structure a pass-through or pay-through
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Legal Structure
• If the corporate entity wishes to retain some interest in the collateral, there is concern that a bankruptcy court could redirect the collateral’s cash flows or the collateral itself
• To avoid this, a bankruptcy-remote special-purpose vehicle (SPV) is formed
• The wholly owned corporation buys the loans and issues the asset backed security
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Cash Flows
• An asset backed security can have either amortizing or non-amortizing cash flows
• If there are no scheduled principal payments then the issue is non-amortizing, even if the monthly minimum payment is greater than the interest charges
• Prepayment and default rates must also be forecast
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Automobile Loans
• Cash flow: amortized, fixed or floating rate
• Prepayments:– Caused by, replacement, repossession, loss or
destruction, refinancing– Repossession rates sensitive to economic
conditions– Modelled using absolute prepayment rate
(ABS) as a percent of original balance
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Automobile Loans
• Payment structure– Smaller deals often pass-through– Larger deals usually pay-through
• Credit enhancement– Typically uses senior/subordinated structure– Often uses some other credit enhancement to
boost support to 8-12%
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Credit Card Receivables
• Cash Flow– Non-amortized, fixed or floating rate– Principal payments received in lockout or
revolving period (18 months to 10 years) are reinvested in additional receivables
– After the lockout period, principal payments are made to investors, this is called the principal-amortization period
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Credit Card Receivables
• Early amortization triggers: if some event happens, the reinvestment in receivables is stopped early
• Monthly payment rate (MPR): monthly payment divided by outstanding balance tracked, low levels can lead to extension risk and may trigger early amortization
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Credit Card Payment Structure
• Three different structures have been used:– Pass-through structure– Controlled amortization structure: payments are
the lesser of a low principal payment schedule or the actual principal payments
– Bullet-payment structure: all principal repaid at a certain date, during accumulation period, principal payments invested in cash accounts
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C. C. Credit Enhancement
• Early securities used bank letters of credit
• Some credit downgrades of banks caused this to go out of favour
• Common today are senior/subordinated structures with cash collateral accounts (or collateral invested accounts)
• Typical support levels around 11%
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HEL Backed Securities
• Home equity loans are 2nd or lower lien mortgages; closed end is like a normal mortgage, open ended is like a line of credit
• Cash Flow: monthly, similar to MBS, but prepayments reach a high level faster and at a higher level, with both tendencies exaggerated as the credit quality of the borrower decreases
• Payment structures: any• Credit enhancements: any
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Manufactured Housing
• Manufactured Housing (mobile homes) loans can be issued as mortgages (if land included) or consumer retail instalment loans
• MHBS can be issued by Ginnie Mae or by private entities
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Manufactured Housing
• Amortization period usually 15-20 years
• Prepayments lower than conventional MBS– Lower prices, so less incentive to refinance– Depreciation often faster than principal pay
down, so refinancing may be difficult– Lower average credit rating of borrowers
• Payment structure and credit enhancement as for any other mortgage backed security
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Dodd-Frank Wall Street Reform and Consumer Protection Act
• Because of the turmoil that occurred in the securitization market and related sectors of the financial market, in July 2010, Congress passed the Dodd-Frank Wall Street Reform and Consumer Protection Act.
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Dodd-Frank Wall Street Reform and Consumer Protection Act
• The key features of the act;– Securitizes must retain a portion of the
transaction’s credit risk– Reporting standards and disclosure– Representations and warranties required to be
provided and the mechanisms for enforcing them
– Due diligence requirements
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Collateralized Debt Obligations
• When the ABS market began, there was a debt product that employed the securitization to pool a diversified pool of some asset type and issue securities backed by the cash flow of the asset pool. These debt products are called collateralized debt obligations (CDOs)
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Collateralized Debt Obligations• Although many types of asset classes have been
used as collateral in a CDO, the following are the major ones:– investment-grade corporate bonds
– high-yield corporate bonds
– emerging market bonds
– nonagency residential mortgage-backed securities
– commercial mortgage-backed securities (CMBS);
– leveraged bank loans
– collateralized debt obligations41