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RiskMetrics was a free service offered
by JP Morgan in 1994 to promote
value-at-risk (VaR) as a risk management tool. At the time, VaR was
used by some financial firms but was largely unheard of among corporate
treasuries, energy firms and commodity trading firms. RiskMetrics was one
of three factors that lead to widespread adoption of value-at-risk by both financial
and non-financial firms during the mid 1990s. The other two factors were
the Group of 30 Report
and the 1996 amendment to the
Basel Accord.
During the late 1980’s, JP Morgan developed its own firm-wide
value-at-risk
system. This modeled several hundred
key factors. A covariance matrix was
updated quarterly from historical data. Each day, trading units would
report by e-mail their positions’
deltas with respect to each
of the key factors. These were aggregated to express the combined
portfolio’s value as a linear polynomial of the key factors. From this,
the standard deviation of portfolio value was calculated. Various
VaR metrics were employed. One of these was
one-day 95% USD VaR, which was calculated using an assumption that the
portfolio’s value was
normally distributed.
With this VaR measure, JP Morgan replaced
a cumbersome system of notional market risk
limits with a simple system of VaR limits. Starting in 1990, VaR
numbers were combined with P&L’s in a report for each day’s 4:15 PM
Treasury meeting in New York. Those reports, with comments from the
Treasury group, were forwarded to JP Morgan's Chairman Weatherstone.
One of the architects of the new VaR measure was
Till Guldimann. His
career with JP Morgan had positioned him to help develop and then promote
the VaR measure within the firm. During the mid 1980’s, he was responsible
for the firm’s
asset-liability analysis. Working with other professionals, he
developed concepts that would be used in the VaR measure. Later as
chairman of the firm’s market risk committee, he promoted the VaR measure
internally. As fate would have it, Guldimann’s next position placed him in
a role to promote the VaR measure outside the firm.
In 1990 Guldimann took responsibility for JP Morgan's Global Research
department, overseeing research activities to support marketing to
institutional clients. In that capacity he managed an annual research
conference for clients. In 1993, risk management was the conference theme.
Guldimann gave the keynote address and arranged for a demonstration of JP
Morgan’s VaR system. The demonstration generated considerable interest.
Clients asked if they might purchase or lease the system. Since JP Morgan
was not a software vendor, they were disinclined to comply. Guldimann
proposed an alternative. The firm would provide clients with the means to
implement their own systems. JP Morgan would publish a methodology,
distribute the necessary covariance matrix and encourage software vendors
to develop compatible software.
Guldimann formed a small team to develop something for the next year’s
research conference. The service they developed was called RiskMetrics. It
comprised a detailed technical document as well as a covariance matrix for
several hundred key factors, which was updated daily. Both were
distributed without charge over the Internet. The service was rolled out
with considerable fanfare in October 1994. A public relations firm placed
ads and articles in the financial press. Representatives of JP Morgan went
on a multi-city tour to promote the service. Software vendors, who had
received advance notice, started promoting compatible software. Launched
at a time of global concerns about derivatives and leverage, the timing
for RiskMetrics was perfect.
RiskMetrics was not a technical breakthrough. While the RiskMetrics
Technical Document contained original ideas, for the most part, it
described practices that were already widely used. The important
contribution of RiskMetrics was that it publicized value-at-risk to a wide audience.
Ultimately, JP Morgan spun RiskMetrics off as an independent consulting
and software firm.
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Basel Committee
An international committee that has has played a
leading role in standardizing bank regulations across jurisdictions.
financial
risk management Practices by which a firm optimizes the
manner in which it takes financial risk.
Group of 30 Report
An influential 1993 industry report on OTC derivatives.
risk Comprises two components:
uncertainty and exposure.
value-at-risk A
category of market risk measures. |
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Ads by Contingency Analysis
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A number of texts offer introductions
to value-at-risk in the general context of risk management. See Dowd (1998), Chrouhy et al (2001)
or Marrison (2002).
For a more in-depth treatment of value-at-risk, Butler (1999)
offers an elementary treatment while Holton (2003) is
more advanced. See Holton (2003)
for the history of value-at-risk and RiskMetrics.
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Morgan
Guaranty (1994). RiskMetrics Technical Document 2nd
Edition, New
York: Morgan Guaranty. |
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