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Liquidity risk is financial
risk due to uncertain
liquidity. An institution might
lose liquidity if its credit rating
falls, it experiences sudden unexpected cash outflows, or some other
event causes counterparties to avoid trading with or lending to the
institution. A firm is also exposed to liquidity risk if markets on which
it depends are subject to loss of liquidity.
Liquidity risk tends to compound other risks. If a trading organization
has a position in an illiquid
asset, its limited ability to liquidate that position at short notice will
compound its market risk.
Suppose a firm has offsetting cash flows with two different counterparties
on a given day. If the counterparty that owes it a payment defaults, the
firm will have to raise cash from other sources to make its payment.
Should it be unable to do so, it too we default. Here, liquidity risk is
compounding credit risk.
Obviously, a position can be
hedged against
market risk but still entail liquidity risk. This is true in the above
credit risk example—the two payments are offsetting, so they entail credit
risk but not market risk. Another example is the 1993
Metallgesellschaft Debacle.
Futures were used to hedge an
OTC obligation. It is
debatable whether the hedge was effective from a market risk standpoint,
but it was the liquidity crisis caused by staggering
margin calls on the futures that
forced Metallgesellschaft to unwind the positions.
Accordingly, liquidity risk has to be managed in addition to market,
credit and other risks. Because of its tendency to compound other risks,
it is difficult or impossible to isolate liquidity risk. In all but the
most simple of circumstances, comprehensive
metrics of
liquidity risk don't exist. Certain techniques of
asset-liability
management can be applied to assessing liquidity risk. A simple test
for liquidity risk is to look at future net cash flows on a day-by-day
basis. Any day that has a sizeable negative net cash flow is of concern.
Such an analysis can be supplemented with
stress testing. Look at net cash
flows on a day-to-day basis assuming that an important counterparty
defaults.
Obviously, such analyses cannot take into account contingent cash
flows, such as cash flows from
derivatives or
mortgage-backed
securities. If an organization's cash flows are largely contingent,
liquidity risk may be assessed using some form of
scenario analysis.
Construct multiple scenarios for market movements and defaults over a
given period of time. Assess day-to-day cash flows under each scenario.
Because balance sheets differed so significantly from one organization to
the next, there is little standardization in how such analyses are
implemented.
Regulators are primarily concerned about
systemic
implications of liquidity risk.
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asset-liability
management Techniques for protecting a firm's solvency in the context of accrual accounting.
credit risk Risk due to uncertainty in a counterparty's
ability to perform on an obligation.
financial
risk management Practices by which a firm optimizes the
manner in which it takes financial risk.
gap analysis
A technique of asset-liability management used to assess interest rate risk or
liquidity risk.
legal risk
Risk from uncertainty due to legal actions or uncertainty in the applicability
or interpretation of contracts, laws or regulations.
leverage Debt financing or anything that can similarly magnify the risk
and reward of an investment.
liquidity
Term used in various senses, all relating to availability of, access to, or
convertibility into cash.
market risk Risk
due to uncertainty in the market value of a portfolio.
operational risk
Sometimes defined as encompassing all financial risks other than
market and credit risks.
risk Comprises two components:
uncertainty and exposure.
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Ads by Contingency Analysis
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Persaud (2003)
is an edited collection looking at different aspects of liquidity
risk. Harris (2003)
is an outstanding text on all aspects of trading. It discusses
liquidity risk in depth. Schwartz and Francioni (2004)
is the essential text on liquidity risk in equity markets. Das (2003)
discusses liquidity risk in OTC derivatives markets.
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