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Definition of Duration

Duration Image 1

Duration

A common gauge of the price sensitivity of an asset or portfolio to a change in interest rates.


Duration

The expected life of a fixed-income security considering its coupon
yield, interest payments, maturity, and call features. As market interest rates
rise, the duration of a financial instrument decreases. See Macaulay duration.


Duration

The time it takes for a policy or annuity to reach maturity.


Duration

The weighted average of the time until maturity of each of the
expected cash flows of a debt security



Related Terms:

Dollar duration

The product of modified duration and the initial price.


Effective duration

The duration calculated using the approximate duration formula for a bond with an
embedded option, reflecting the expected change in the cash flow caused by the option. Measures the
responsiveness of a bond's price taking into account the expected cash flows will change as interest rates
change due to the embedded option.



Macaulay duration

The weighted-average term to maturity of the cash flows from the bond, where the
weights are the present value of the cash flow divided by the price.


Macaulay duration

A widely used measure of price sensitivity to yield
changes developed by Frederick Macaulay in 1938. It is measured in years and
is a weighted average-time-to-maturity of an instrument. The Macaulay
duration of an income stream, such as a coupon bond, measures how long, on
average, the owner waits before receiving a payment. It is the weighted
average of the times payments are made, with the weights at time T equal to
the present value of the money received at time T.


Duration Image 2

Modified duration

The ratio of Macaulay duration to (1 + y), where y = the bond yield. Modified duration is
inversely related to the approximate percentage change in price for a given change in yield.


Modified duration

The Macaulay duration discounted by the per-period
interest rate; i.e., divided by (1+rate/frequency).


Mortgage duration

A modification of standard duration to account for the impact on duration of MBSs of
changes in prepayment speed resulting from changes in interest rates. Two factors are employed: one that
reflects the impact of changes in prepayment speed or price.


Negative duration

A situation in which the price of the MBS moves in the same direction as interest rates.


BONDPAR

A system that monitors and evaluates the performance of a fixed-income portfolio , as well as the
individual securities held in the portfolio. BONDPAR decomposes the return into those elements beyond the
manager's control--such as the interest rate environment and client-imposed duration policy constraints--and
those that the management process contributes to, such as interest rate management, sector/quality allocations,
and individual bond selection.


Canadian Deposit Insurance Corporation

Better known as CDIC, this is an organization which insures qualifying deposits and GICs at savings institutions, mainly banks and trust companys, which belong to the CDIC for amounts up to $60,000 and for terms of up to five years. Many types of deposits are not insured, such as mortgage-backed deposits, annuities of duration of more than five years, and mutual funds.


Certificate of deposit (CD)

Also called a time deposit, this is a certificate issued by a bank or thrift that
indicates a specified sum of money has been deposited. A CD bears a maturity date and a specified interest
rate, and can be issued in any denomination. The duration can be up to five years.


Combination matching

Also called horizon matching, a variation of multiperiod immunization and cash
flow matching in which a portfolio is created that is always duration matched and also cash-matched in the
first few years.


Convexity

A measure of the rate of change in duration; measured in time.
The greater the rate of change, the more the duration changes as yield changes.


Duration Image 3

Immunization strategy

A bond portfolio strategy whose goal is to eliminate the portfolio's risk against a
general change in the rate of interest through the use of duration.


Longer-Term Fixed Assets

Assets having a useful life greater than one year but the duration of the 'long term' will vary with the context in which the term is applied.



Rate anticipation swaps

An exchange of bonds in a portfolio for new bonds that will achieve the target
portfolio duration, based on the investor's assumptions about future changes in interest rates.


Replacement

This subject of replacement of existing policies is covered because sometimes existing life insurance policies are unnecessarily replaced with new coverage resulting in a loss of valuable benefits. If someone suggests replacing your existing coverage, insist on having a comparison disclosure statement completed.
The most important policies to examine in detail are those which were issued in Canada prior to December 2, 1982. If you have a policy of this vintage with a significant cash surrender value, you may want to consider keeping it. It has special tax advantages over policies issued after December 2, 1982.
Basically, the difference is this. The cash surrender value of a pre December, 1982 policy can be converted to an annuity in accordance with the settlement options in the policy and as a result, the tax on any policy gain can be spread over the duration of the annuity. Since only the interest element of the annuity payment will be taxed, there will be less of a tax impact on the annuitant. Policies issued after December 2, 1982 which have their cash surrender value annuitized trigger a disposition and the annuitant must pay tax on the total policy gain immediately. If you still decide to replace existing coverage, don't cancel what you have until the new coverage has been issued.


Stratified sampling approach to indexing

An approach in which the index is divided into cells, each
representing a different characteristic of the index, such as duration or maturity.


Term

This is usually the duration of a loan.


Term Life

A product that provides life coverage for a specified duration typically not beyond the age of 75.


Zero curve, zero-coupon yield curve

A yield curve for zero-coupon bonds;
zero rates versus maturity dates. Since the maturity and duration (Macaulay
duration) are identical for zeros, the zero curve is a pure depiction of supply/
demand conditions for loanable funds across a continuum of durations and
maturities. Also known as spot curve or spot yield curve.



 

 

 

 

 

 

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