Mortgages - Answers loans to individuals or businesses to purchase homes, land, or other real
property
• Four basic types of mortgages are issued by U.S. financial institutions - Answers 1) home mortgages
are used to purchase one- to four-family dwellings (called "single-family mortgages") - 75%
2) multifamily dwellings mortgages are used to purchase apartment complexes, townhouses, and
condominiums - 17%
3) commercial mortgages are used to finance the purchase of real estate for business purposes - 7%
4) farm mortgages are used to finance the purchase of farms
The key difference between US and Canada - Answers interest on mortgages is tax deductible in the
US. - Interest on up to $750,000 of mortgage debt is deductible.
Mortgage Refinancing (Prepayment) - Answers • Mortgage Prepayment happens when a borrower
takes out a new mortgage and uses the proceeds to pay off an existing mortgage
- mortgages are most often refinanced when an existing mortgage has a higher interest rate than
current rates
- In Canada, mortgages can be open or closed. Open mortgages allow prepayments without penalties.
Closed mortgages charge steep prepayment penalties, e.g., an interest rate differential between your
mortgage rate and the current market rate multiplied by the outstanding balance and remaining
months to maturity. If you buy a new house you can port your mortgage to the new house, avoid the
prepayment penalty.
Mortgage types: Interest rates - Answers • Fixed-rate mortgages
• Adjustable-rate mortgages
Fixed-rate mortgages - Answers lock in the borrower's interest rate
- required monthly payments are fixed over the life of the mortgage.
- lenders assume interest rate risk
Adjustable-rate mortgages - Answers (ARMs) tie the borrower's interest rate to some market interest
rate or index
- required monthly payments can change over the life of the mortgage, although they may initially be
fixed for a set time period.
• For example, hybrid ARMs: 5/1 (fixed rate for 5 years, then rate reset every year) are popular in the
US.
- borrowers assume interest rate risk with an ARM
- ARMs can increase default risk
• Canada. All mortgages in Canada are ARMs from the US perspective. - Fixed rate mortgages: the
rate resets only at the end of the term (every 3-10 years, 5yrs most typical). - Variable rate mortgages:
the rate changes any time the prime rate changes
Mortgage types - Answers • Subprime mortgages
- Subprime mortgages are mortgages whose borrowers do not qualify for a 'prime' credit rating
because of their low FICO credit scores (arising from prior credit problems, such as delinquencies and
defaults; or they may simply lack sufficient credit history or have insufficient income).
- Beginning in 2006, problems in the subprime mortgage market led to the financial crisis of 2007 and
2008
• Second mortgage: home equity loan vs. home equity line of credit (HELOC)
- Are similar in that they are loans secured by the property value.
- Second mortgage is a subordinated claim to the first mortgage
- Home equity loan is lump sum vs. HELOC is a line of credit
• Reverse-annuity mortgages (RAMs)
- Retirees or homeowners with a substantial amount of equity in their home can sell the equity back
to a bank, and the bank makes monthly payments over time
Secondary Mortgage Markets and Securitization - Answers • FIs remove mortgages from their
balance sheets through one of two mechanisms
- by pooling recently originated mortgages together and selling them in the secondary market
- by securitizing mortgages (i.e., by issuing securities backed by the mortgages)
, - Securitization is a capital market activity in which assets (liabilities) that generate cash flows are
pooled and used to create new, marketable securities.
- In 2007, 40% of mortgages were securitized in the US, only 3% in Canada.
• FIs can reduce the liquidity risk, interest rate risk, and credit risk of their loan portfolios by removing
mortgages from their balance sheet.
Securitization - Answers • Types of asset-backed securities:
• Securities backed by mortgage cash flows (CFs) are called mortgage-backed securities (MBS)
• securities backed by bond or other debt CFs are called collateralized debt obligations (CDOs)
- The underlying collateral that generates the CFs can be bonds, loans, insurance, tranches of
ABS/MBS/CDO, credit derivatives such as credit default swaps.
• securities backed by all other assets (e.g., leases, patent royalties, whiskey sales) are simply called
asset-backed securities (ABS)
Special Purpose Vehicles (SPV, SPE) - used in securitization - Answers • SPVs are companies created
by a sponsor company (e.g., a bank) to hold and service assets or liabilities that the sponsor transfers
or sells to it.
- Example. A bank creates an SPV and sells it mortgages originated by the bank. The SPV creates an
MBS and sells its CFs (tranches) to investors.
• SPVs are like shell companies - they typically have no employees, have no physical location, and
make no decisions (automatized to perform only the function they are created for).
• The sponsor company benefits
- the assets/liabilities are removed from its balance sheet.
- when assets are sold the sponsor has its capital requirements reduced and leverage reduced,
allowing for more lending.
- bankruptcy-remotedness. SPVs are structured so that they cannot go bankrupt even if the sponsor
goes bankrupt.
- the sponsor can earn a fee (off-balance-sheet income) for servicing the securitized assets held by
SPV.
Two Types of Mortgage-Backed Securities (MBS) - Answers • Pass-through mortgage-backed
securities "pass through" promised principal and interest payments to investors
- Each investor receives a pro rata share of the CFs from the underlying pool of mortgages.
- There is only one class of bond holders
• Collateralized mortgage obligations (CMOs) are multiclass MBS with multiple bond holder classes or
tranches
CMO tranche types - Answers CMO tranches are created depending on the issuer and investor
objectives and wishes
- Term Preferences
- Duration
- Credit Risk
- CF volatility, prepayment risk
Term Preferences - Answers Tranches pay and mature sequentially. E.g., tranches F2, F3, ... receive
principal CFs only after tranche F1 is retired. This is called a plain-vanilla CMO.
Duration - Answers Floater: yield=LIBOR, Inverse Floater: yield=8%-LIBOR. Interest only and principal
only (IO & PO) tranches.
Credit Risk - Answers Senior and subordinated tranches. Defaults in the mtg pool reduce CFs to
subordinated tranches first and do not affect senior tranches if subordinated tranches still exist.
CF volatility, prepayment risk - Answers PAC (planned amortization class), TAC (targeted amortization
class) put upper and/or lower bounds on the principal prepayment speed - PAC/TAC tranches have
companion tranches that absorb extra CFs of potentially faster prepayments.
Mutual Funds - Answers • Mutual funds pool the resources of many small investors by selling them
shares and using the proceeds to buy securities.
• The first mutual fund similar to the funds of today was introduced in Boston in 1924.
• Ownership in mutual funds has increased dramatically
- In 1980, only 5.7% of households held mutual fund shares. In 2013, that number was 45%.
- 7700 MFs in the US, 2900 in Canada in 2013.
• MFs are the second most important group of FIs as measured by asset size (second only to
commercial banks)