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A swap is a
cash-settled
OTC
derivative. Except for
forwards, swaps are the most
simple form of OTC derivative.
A swap is an agreement between two counterparties to
exchange two streams of cash flows—the parties "swap" the cash flow
streams. Those cash flow streams can be defined in almost any manner. All
that matters is that their present values be equal (except for a bid-ask
spread, if one party to the swap is a dealer). While swaps are used for
various purposes—from
hedging to
speculation—their fundamental purpose is to change the character of an
asset or liability without liquidating that asset or liability.
For example, an investor
realizing returns from an
equity investment can swap those returns into
less risky fixed income cash flows—without having to liquidate the
equities. A corporation with
floating rate debt can swap that debt into a
fixed rate obligation—without having to retire and reissue debt.
This is illustrated in Exhibit 1. Suppose you are
receiving Cash Flow Stream A from a counterparty. You would like to change
the nature of that cash flow stream—perhaps making it less risky. Rather
than attempt to renegotiate the obligation with the counterparty, you
enter into a swap agreement with another party. Under that agreement, you
swap Cash Flow Stream A for a Cash Flow Stream B, which better suits your
needs.
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By entering into a swap with a third
party, you can convert a Cash Flow Stream A into a different Cash
Flow Stream B. This does now require the liquidation or
renegotiation of Cash Flow Stream A. Indeed, the counterparty paying
you Cash Flow Stream A doesn't even need to know about the
offsetting swap. |
Exhibit 1 illustrates how a swap can modify the character
of an asset. If you reversed all the arrows in that exhibit, it would then
illustrate how a swap can change the character of a liability.
When a swap is first entered into, it has zero
market value (except possibly for
a small bid-ask spread). This is because both cash flow streams have
identical, offsetting market values. As time goes by, the swap is likely
to take on a positive or negative market value. This may happen for one or
two reasons:
Market
variables that affect the market values of one or both cash flow streams will
fluctuate, causing the values of the cash flow streams to change. The
swap's market value, which is simply the difference between the two cash
flow streams' market values, will then also change.
One cash flow
stream may have more accelerated payments than the other, so the swap
takes on a positive market value for the party making the more accelerated
payments. An extreme case of this is some customized swaps that require one party to
make a substantial payment right at the outset.
For the first of the above reasons, swaps entail
market risk. For both reasons,
they entail pre-settlement
risk.
Collateralization is a common way of addressing pre-settlement risk of
one or both of the counterparties.
Settlement risk can be a
problem for some swaps. However, cash flow streams are often structured so
that payments for one occur on the same dates as payments for the other.
This allows cash flows to be netted
against each other (so long as the cash flows are in the same currency).
A vanilla swap is any
swap with fairly standardized provisions. The term is usually applied to
vanilla interest rate swaps or
vanilla currency swaps. Vanilla swaps are appealing because
pricing tends to be transparent and
transaction costs are
small. Vanilla swaps can be used to speculate or to quickly hedge the
market risk of a position without necessarily offsetting the specific cash
flows of that position.
Swaps can also be customized to offset the specific
cash flows of a position. Dealers often structure such non-vanilla swaps
for clients. They may charge a fee for doing so, and pricing may reflect a
large bid-ask spread (caveat emptor). An asset swap is a
non-vanilla swap customized to change the character of a specific asset. A
liability swap is such a swap
customized to change the character of a specific liability.
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Swaps are also categorized according to the nature of the
cash flow streams being exchanged. See articles describing
interest
rate swaps
currency
swaps
total
return swaps.
Swaps have traded since the 1980s. The first known transaction was a
currency swap between the World Bank and IBM in August 1981.
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credit derivative
A derivative instrument designed to transfer credit risk from one party to
another.
currency
swap A swap for the exchange of cash flow streams in two
different currencies.
derivative
instrument An instrument
that derives value from the value of some commodity, energy, or other financial
instrument.
forward contract
A trade that is agreed to at one point in time but will
take place at some later time.
interest
rate swap A swap under which both cash flow streams are in the same currency and are defined as cash flow streams that might be associated with some fixed income obligations.
swaption An option on a swap. |
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Ads by Contingency Analysis
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| Kolb (2002)
is a practical introduction to swaps and other derivatives. For a
comprehensive treatment of swap markets, see Das (2003).
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