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Trading and
Capital-Markets Activities Manual
Trading
Activities: Capital Adequacy (Continue)
Source: Federal Reserve System
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Manual (pdf format) can be downloaded from the Federal Reserve's web
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ASSESSING CAPITAL ADEQUACY AT LARGE,
COMPLEX BANKING ORGANIZATIONS
Supervisors should place increasing
emphasis on banking organizations' internal processes for assessing risks
and for ensuring that capital, liquidity, and other financial resources
are adequate in relation to the organization's overall risk profiles.
This emphasis is necessary in part because of the greater scope and complexity
of business activities, particularly those related to ongoing financial
innovation, at many banking organizations. In this setting, one of the
most challenging issues bankers and supervisors face is how to integrate
the assessment of an institution's capital adequacy with a comprehensive
view of the risks it faces. Simple ratios- including risk-based capital
ratios-and traditional ''rules of thumb'' no longer suffice in assessing
the overall capital adequacy of many banking organizations, especially
large institutions and others with complex risk profiles, such as those
that are significantly engaged in securitizations or other complex transfers
of risk.
Consequently, supervisors and examiners should evaluate internal capital-management
processes to judge whether they meaningfully tie the identification, monitoring,
and evaluation of risk to the determination of an institution's capital
needs. The fundamental elements of a sound internal analysis of capital
adequacy include measuring all material risks, relating capital to the
level of risk, stating explicit capital adequacy goals with respect to
risk, and assessing conformity to an institution's stated objectives.
It is particularly important that large institutions and others with complex
risk pro-files be able to assess their current capital adequacy and future
capital needs systematically and comprehensively, in light of their risk
profiles and business plans. For more information, see SR-99-18, ''Assessing
Capital Adequacy in Relation to Risk at Large Banking Organizations and
Others with Complex Risk Profiles.''
The practices described in this subsection extend beyond those currently
followed by most large banking organizations to evaluate their capital
adequacy. Therefore, supervisors and examiners should not expect these
institutions to immediately have in place a comprehensive internal process
for assessing capital adequacy. Rather, examiners should look for efforts
to initiate such a process and thereafter make steady and meaningful progress
toward a comprehensive assessment of capital adequacy. Examiners should
evaluate an institution's progress at each examination or inspection,
considering progress relative to both the institution's former practice
and its peers, and record the results of this evaluation in the examination
or inspection report.
For those banking organizations actively involved in complex securitizations,
other secondary-market credit activities, or other complex transfers of
risk, examiners should expect a sound internal process for capital adequacy
analysis to be in place immediately as a matter of safe and sound banking.
Secondary-market credit activities generally include loan syndications,
loan sales and participations, credit derivatives, and asset securitizations,
as well as the provision of credit enhancements and liquidity facilities
to such transactions. These activities are described further in SR-97-21,
''Risk Management and Capital Adequacy of Exposures Arising from Secondary-Market
Credit Activities.''
Examiners should evaluate whether an organization is making adequate progress
in assessing its capital needs on the basis of the risks arising from
its business activities, rather than focusing its internal processes primarily
on compliance with regulatory standards or comparisons with the capital
ratios of peer institutions. In addition to evaluating an organization's
current practices, supervisors and examiners should take account of plans
and schedules to enhance existing capital-assessment processes and related
risk-measurement systems, with appropriate sensitivity to transition timetables
and implementation costs. Evaluation of adherence to schedules should
be part of the examination and inspection process. Regardless of planned
enhancements, supervisors should expect current internal processes for
capital adequacy assessment to be appropriate to the nature, size, and
complexity of an organization's activities, and to its process for determining
the allowance for credit losses.
The results of the evaluation of internal processes for assessing capital
adequacy should currently be reflected in the institution's ratings for
management. Examination and inspection reports should contain a brief
description of the internal processes involved in internal analysis of
the adequacy of capital in relation to risk, an assessment of whether
these processes are adequate for the complexity of the institution and
its risk profile, and an evaluation of the institution's efforts to develop
and enhance these processes. Significant deficiencies and inadequate progress
in developing and maintaining capital-assessment procedures should be
noted in examination and inspection reports. As noted above, examiners
should expect those institutions already engaged in complex activities
involving the transfer of risk, such as securitization and related activities,
to have sound internal processes for analyzing capital adequacy in place
immediately as a fundamental component of safe and sound operation. As
these processes develop and become fully implemented, supervisors and
examiners should also increasingly rely on internal assessments of capital
adequacy as an integral part of an institution's capital adequacy rating.
If these internal assessments suggest that capital levels appear to be
insufficient to support the risks taken by the institution, examiners
should note this finding in examination and inspection reports, discuss
plans for correcting this insufficiency with the institution's directors
and management, and initiate supervisory actions, as appropriate.
Fundamental Elements of a Sound Internal Analysis of Capital Adequacy
Because risk-measurement and -management issues are evolving rapidly,
it is currently neither possible nor desirable for supervisors to prescribe
in detail the precise contents and structure of a sound and effective
internal capital-assessment process for large and complex institutions.
Indeed, the attributes of sound practice will evolve over time as methodologies
and capabilities change, and will depend significantly on the individual
circumstances of each institution. Nevertheless, a sound process for assessing
capital adequacy should include four fundamental elements:
1. Identifying and measuring all material risks. A disciplined risk-measurement
program promotes consistency and thoroughness in assessing current and
prospective risk pro-files, while recognizing that risks often cannot
be precisely measured. The detail and sophistication of risk measurement
should be appropriate to the characteristics of an institution's activities
and to the size and nature of the risks that each activity presents. At
a minimum, risk-measurement systems should be sufficiently comprehensive
and rigorous to capture the nature and magnitude of risks faced by the
institution, while differentiating risk exposures consistently among risk
categories and levels. Controls should be in place to ensure objectivity
and consistency and that all material risks, both on- and off-balance-sheet,
are adequately addressed.
Banking organizations should conduct detailed analyses to support the
accuracy or appropriateness of the risk-measurement techniques used. Similarly,
inputs used in risk measurement should be of good quality. Those risks
not easily quantified should be evaluated through more subjective, qualitative
techniques or through stress testing. Changes in an institution's risk
profile should be incorporated into risk measures on a timely basis, whether
the changes are due to new products, increased volumes or changes in concentrations,
the quality of the bank's portfolio, or the overall economic environment.
Thus, measurement should not be oriented to the current treatment of these
transactions under risk-based capital regulations. When measuring risks,
institutions should perform comprehensive and rigorous stress tests to
identify possible events or changes in markets that could have serious
adverse effects in the future. Institutions should also give adequate
consideration to contingent exposures arising from loan commitments, securitization
programs, and other transactions or activities that may create these exposures
for the bank.
2. Relating capital to the level of risk. The amount of capital held should
reflect not only the measured amount of risk, but also an adequate ''cushion''
above that amount to take account of potential uncertainties in risk measurement.
A banking organization's capital should reflect the perceived level of
precision in the risk measures used, the potential volatility of exposures,
and the relative importance to the institution of the activities producing
the risk. Capital levels should also reflect that historical correlations
among exposures can rapidly change. Institutions should be able to demonstrate
that their approach to relating capital to risk is conceptually sound
and that outputs and results are reasonable. An institution could use
sensitivity analysis of key inputs and peer analysis in assessing its
approach. One credible method for assessing capital adequacy is for an
institution to consider itself adequately capitalized if it meets a reasonable
and objectively determined standard of financial health, tempered by sound
judgment-for example, a target public-agency debt rating or even a statistically
measured maximum probability of becoming insolvent over a given time horizon.
In effect, this latter method is the foundation of the Basel Accord's
treatment of capital requirements for market foreign exchange risk.
3. Stating explicit capital adequacy goals with respect to risk. Institutions
need to establish explicit goals for capitalization as a standard for
evaluating their capital adequacy with respect to risk. These target capital
levels might reflect the desired level of risk coverage or, alternatively,
a desired credit rating for the institution that reflects a desired degree
of creditworthiness and, thus, access to funding sources. These goals
should be reviewed and approved by the board of directors. Because risk
profiles and goals may differ across institutions, the chosen target levels
of capital may differ significantly as well. Moreover, institutions should
evaluate whether their long-run capital targets might differ from short-run
goals, based on current and planned changes in risk pro-files and the
recognition that accommodating new capital needs can require significant
lead time.
In addition, capital goals and the monitoring of performance against those
goals should be integrated with the methodology used to identify the adequacy
of the allowance for credit losses (the allowance). Although both the
allowance and capital represent the ability to absorb losses, insufficiently
clear distinction of their respective roles in absorbing losses can distort
analysis of their adequacy. For example, an institution's internal standard
of capital adequacy for credit risk could reflect the desire that capital
absorb ''unexpected losses,'' that is, some level of potential losses
in excess of that level already estimated as being inherent in the current
portfolio and reflected in the allowance.20
In this setting, an institution
that does not maintain its allowance at the high end of the range of estimated
credit losses would require more capital than would otherwise be necessary
to maintain its overall desired capacity to absorb potential losses. Failure
to recognize this relationship could lead an institution to overestimate
the strength of its capital position.
4. Assessing conformity to the institution's stated objectives. Both the
target level and composition of capital, along with the process for setting
and monitoring such targets, should be reviewed and approved periodically
by the institution's board of directors.
20. In March 1999, the banking agencies and the Securities and Exchange
Commission issued a joint interagency letter to financial institutions
stressing that depository institutions should have prudent and conservative
allowances that fall within an acceptable range of estimated losses. The
Federal Reserve has issued additional guidance on credit-loss allowances
to supervisors and bankers in SR-99-13, ''Recent Developments Regarding
Loan-Loss Allowances.''
Risks Addressed in a Sound Internal Analysis of Capital
Adequacy
Sound internal risk-measurement and capital assessment processes should
address the full range of risks faced by an institution. The four risks
listed below do not represent an exhaustive list of potential issues that
should be addressed. The capital regulations of the Federal Reserve and
other U.S. banking agencies refer to many specific factors and other risks
that institutions should consider in assessing capital adequacy.
• Credit risk. Internal credit-risk-rating systems are vital to
measuring and managing credit risk at large banking organizations. Accordingly,
a large institution's internal ratings system should be adequate to support
the identification and measurement of risk for its lending activities
and adequately integrated into the institution's overall analysis of capital
adequacy. Well-structured credit-risk-rating systems should reflect implicit,
if not explicit, judgments of loss probabilities or expected loss, and
should be supported where possible by quantitative analyses. Definitions
of risk ratings should be sufficiently detailed and descriptive, applied
consistently, and regularly reviewed for consistency throughout the institution.
SR-98-25, ''Sound Credit-Risk Management and the Use of Internal Credit-Risk
Ratings at Large Banking Organizations,'' discusses the need for banks
to have sufficiently detailed, consistent, and accurate risk ratings for
all loans, not only for criticized or problem credits. It describes an
emerging sound practice of incorporating such ratings information into
internal capital frameworks, recognizing that riskier assets require higher
capital levels.
Banking organizations should also take full account of credit risk arising
from securitization and other secondary-market credit activities, including
credit derivatives. Maintaining detailed and comprehensive credit-risk
measures is most necessary at institutions that conduct asset securitization
programs, due to the potential of these activities to greatly change-and
reduce the transparency of-the risk profile of credit portfolios. SR-97-21,
''Risk Management and Capital Adequacy of Exposures Arising from Secondary-Market
Credit Activities,'' states that such changes have the effect of distorting
portfolios that were previously ''balanced'' in terms of credit risk.
As used here, the term ''balanced'' refers to the overall weighted mix
of risks assumed in a loan portfolio by the current regulatory risk-based
capital standard. This standard, for example, effectively treats the commercial
loan portfolios of all banks as having ''typical'' levels of risk. The
current capital standard treats most loans alike; consequently, banks
have an incentive to reduce their regulatory capital requirements by securitizing
or otherwise selling lower-risk assets, while increasing the average level
of remaining credit risk through devices like first-loss positions and
contingent exposures. It is important, therefore, that these institutions
have the ability to assess their remaining risks and hold levels of capital
and allowances for credit losses. These institutions are at the frontier
of financial innovation, and they should also be at the frontier of risk
measurement and internal capital allocation.
• Market risk. The current regulatory capital standard for market
risk (see ''Market-Risk Measure,'' below) is based largely on a bank's
own measure of value-at-risk (VAR). This approach was intended to produce
a more accurate measure of risk and one that is also compatible with the
management practices of banks. The market-risk standard also emphasizes
the importance of stress testing as a critical complement to a mechanical
VAR based calculation in evaluating the adequacy of capital to support
the trading function.
• Interest-rate risk. Interest-rate risk within the banking book
(that is, in non-trading activities) should also be closely monitored.
The banking agencies have emphasized that banks should carefully assess
the risk to the economic value of their capital from adverse changes in
interest rates. The ''Joint Policy Statement on Interest-Rate Risk,''
SR-96-13, provides guidance in this matter that includes the importance
of assessing interest-rate risk to the economic value of a banking organization's
capital and, in particular, sound practice in selecting appropriate interest-rate
scenarios to be applied for capital adequacy purposes.
• Operational and other risks. Many banking organizations see operational
risk-often viewed as any risk not categorized as credit or market risk-as
second in significance only to credit risk. This view has become more
widely held in the wake of recent, highly visible breakdowns in internal
controls and corporate governance by internationally active institutions.
Although operational risk does not easily lend itself to quantitative
measurement, it can have substantial costs to banking organizations through
error, fraud, or other performance problems. The great dependence of banking
organizations on information technology systems highlights only one aspect
of the growing need to identify and control this operational risk.
Examiner Review of Internal Analysis of Capital Adequacy
Supervisors and examiners should review internal processes for capital
assessment at large and complex banking organizations, as well as the
adequacy of their capital and their compliance with regulatory standards,
as part of the regular supervisory process. In general, this review should
assess the degree to which an institution has in place, or is making progress
toward implementing, a sound internal process to assess capital adequacy
as described above. Examiners should briefly describe in the examination
or inspection report the approach and internal processes used by an institution
to assess its capital adequacy with respect to the risks it takes. Examiners
should then document their evaluation of the adequacy and appropriateness
of these processes for the size and complexity of the institution, along
with their assessment of the quality and timing of the institution's plans
to develop and enhance its processes for evaluating capital adequacy with
respect to risk. In all cases, the findings of this review should be considered
in determining the institution's supervisory rating for management. Over
time, this review should also become an integral element of assessing
and assigning a supervisory rating for capital adequacy as the institution
develops appropriate processes for establishing capital targets and analyzing
its capital adequacy as described above. If an institution's internal
assessments suggest that capital levels appear to be insufficient to support
its risk positions, examiners should note this finding in examination
and inspection reports, discuss plans for correcting this insufficiency
with the institution's directors and management, and, as appropriate,
initiate follow-up supervisory actions.
Supervisors and examiners should assess the degree to which internal targets
and processes incorporate the full range of material risks faced by a
banking organization. Examiners should also assess the adequacy of risk
measures used in assessing internal capital adequacy for this purpose,
and the extent to which these risk measures are also used operationally
in setting limits, evaluating business-line performance, and evaluating
and controlling risk more generally. Measurement systems that are in place
but are not integral to an institution's risk management should be viewed
with some scepticism. Supervisors and examiners should review whether
an institution treats similar risks across products and/or business lines
consistently, and whether changes in the institution's risk profile are
fully reflected in a timely manner. Finally, supervisors and examiners
should consider the results of sensitivity analyses and stress tests conducted
by the institution, and how these results relate to capital plans.
In addition to being in compliance with regulatory capital ratios, banking
organizations should be able to demonstrate through internal analysis
that their capital levels and composition are adequate to support the
risks they face, and that these levels are properly monitored and reviewed
by directors. Supervisors and examiners should review this analysis, including
the target levels of capital chosen, to determine whether it is sufficiently
comprehensive and relevant to the current operating environment. Supervisors
and examiners should also consider the extent to which an institution
has provided for unexpected events in setting its capital levels. In this
connection, the analysis should cover a sufficiently wide range of external
conditions and scenarios, and the sophistication of techniques and stress
tests used should be commensurate with the institution's activities. Consideration
of such conditions and scenarios should take appropriate account of the
possibility that adverse events may have disproportionate effects on overall
capital levels, such as the effect of tier 1 limitations, adverse capital-market
responses, and other such magnification effects. Finally, supervisors
should consider the quality of the institution's management information
reporting and systems, the manner in which business risks and activities
are aggregated, and management's record in responding to emerging or changing
risks.
In performing this review, supervisors and examiners should be careful
to distinguish between (1) a comprehensive process that seeks to identify
an institution's capital requirements on the basis of measured economic
risk, and (2) one that focuses only narrowly on the calculation and use
of allocated capital (also known as ''economic value added'' or EVA) for
individual products or business lines for internal profitability analysis.
The latter approach, which measures the amount by which operations or
projects return more or less than their cost of capital, can be important
to an organization in targeting activities for future growth or cutbacks.
However, it requires that the organization first determine by some method
the amount of capital necessary for each activity or business line. Moreover,
an EVA approach often is unable to meaningfully aggregate the allocated
capital across business lines and risk types as a tool for evaluating
the institution's overall capital adequacy. Supervisors and examiners
should therefore focus on the first process above and should not be confused
with related efforts of management to measure relative returns of the
firm or of individual business lines, given an amount of capital already
invested or allocated.
MARKET-RISK MEASURE
In August 1996, the Federal Reserve
amended its risk-based capital framework to incorporate a measure for
market risk. (See 12 CFR 208, appendix E, for state member banks and 12
CFR 225, appendix E, for bank holding companies.) As described more fully
below, certain institutions with significant exposure to market risk must
measure that risk using their internal value-at-risk (VAR) measurement
model and, subject to parameters contained in the market-risk rules, hold
sufficient levels of capital to cover the exposure. The market-risk amendment
is a supplement to the credit risk-based capital rules: An institution
applying the market-risk rules remains subject to the requirements of
the credit-risk rules, but must adjust its risk-based capital ratio to
reflect market risk.21
21. An institution adjusts its risk-based capital ratio
by removing certain assets from its credit-risk weight categories and,
instead, including those assets (and others) in the measure for market
risk.
Covered Banking Organizations
The market-risk rules apply to any insured state member bank or bank holding
company whose trading activity (on a worldwide consolidated basis) equals
(1) 10 percent or more of its total assets or (2) $1 billion or more.
For purposes of these criteria, a banking organization's trading activity
is defined as the sum of its trading assets and trading liabilities as
reported in its most recent Consolidated Report of Condition and Income
(call report) for a bank or in its most recent Y-9C report for a bank
holding company. Total assets means quarter-end total assets as most recently
reported by the institution. When addressing this capital requirement,
bank holding companies should include any section 20 subsidiary as well
as any other subsidiaries consolidated in their FR Y-9 reports.
In addition, on a case-by-case basis, the Federal Reserve may require
an institution that does not meet the applicability criteria to comply
with the market-risk rules if it deems it necessary for safety-and-soundness
reasons, or may exclude an institution that meets the applicability criteria
if its recent or current exposure is not reflected by the level of its
ongoing trading activity. Institutions most likely to be exempted from
this capital requirement are small banks whose reported trading activities
exceed the 10 percent criterion but whose management of trading risks
does not raise supervisory concerns. Such banks may be those whose trading
activities focus on maintaining a market in local municipal securities,
but who are not otherwise actively engaged in trading or position-taking
activities. However, before making any exceptions to the criteria, Reserve
Banks should consult with Board staff. An institution that does not meet
the applicability criteria may, subject to supervisory approval, comply
voluntarily with the market-risk rules. An institution applying the market-risk
rules must have its internal-model and risk-management procedures evaluated
by the Federal Reserve to ensure compliance with the rules.
Covered Positions
For supervisory purposes, a covered banking organization must hold capital
to support its exposure to general market risk arising from fluctuations
in interest rates, equity prices, foreign-exchange rates, and commodity
prices, including risk associated with all derivative positions. In addition,
capital must support its exposure to specific risk arising from changes
in the market value of debt and equity positions in the trading account
due to factors other than broad market movements, including the credit
risk of an instrument's issuer. An institution's covered positions include
all of its trading-account positions as well as all foreign-exchange and
commodity positions, whether or not they are in the trading account.
For market-risk capital purposes, an institution's trading account is
defined in the instructions to the banking agencies' call report. In general,
the trading account includes on- and off-balance-sheet positions in financial
instruments acquired with the intent to resell in order to profit from
short-term price or rate movements (or other price or rate variations).
All positions in the trading account must be marked to market and reflected
in an institution's earnings statement. Debt positions in the trading
account include instruments such as fixed or floating-rate debt securities,
nonconvertible preferred stock, certain convertible bonds, or derivative
contracts of debt instruments. Equity positions in the trading account
include instruments such as common stock, certain convertible bonds, commitments
to buy or sell equities, or derivative contracts of equity instruments.
An institution may include in its measure for general market risk certain
non-trading account instruments that it deliberately uses to hedge trading
activities. Those instruments are not subject to a specific-risk capital
charge, but instead continue to be included in risk-weighted assets under
the credit-risk framework.
The market-risk capital charge applies to all of an institution's foreign-exchange
and commodities positions. An institution's foreign exchange positions
include, for each currency, items such as its net spot position (including
ordinary assets and liabilities denominated in a foreign currency), forward
positions, guarantees that are certain to be called and likely to be unrecoverable,
and any other items that react primarily to changes in exchange rates.
An institution may, subject to examiner approval, exclude from the market-risk
measure any structural positions in foreign currencies. For this purpose,
structural positions include transactions designed to hedge an institution's
capital ratios against the effect of adverse exchange-rate movements on
(1) subordinated debt, equity, or minority interests in consolidated subsidiaries
and capital assigned to foreign branches that are denominated in foreign
currencies, and (2) any positions related to unconsolidated subsidiaries
and other items that are deducted from an institution's capital when calculating
its capital base. An institution's commodity positions include all positions,
including derivatives, that react primarily to changes in commodity prices.
Adjustment to the Risk-Based Capital Calculation
An institution applying the market-risk rules must measure its market
risk and, on a daily basis, hold capital to maintain an overall minimum
8.0 percent ratio of total qualifying capital to risk-weighted assets
adjusted for market risk.
An institution's risk-based capital ratio denominator is its adjusted
credit-risk-weighted assets plus its market-risk-equivalent assets. Adjusted
risk-weighted assets are risk-weighted assets, as determined under the
credit-risk-based capital standards, less the risk-weighted amounts of
all covered positions other than foreign exchange positions outside the
trading account and over-the-counter (OTC) derivatives. (In other words,
an institution should not risk weight (or could risk weight at zero percent)
any non-derivative debt, equity, or foreign-exchange positions in its
trading account and any non-derivative commodity positions whether in
or out of the trading account. These positions are no longer subject to
a credit-risk capital charge.) An institution's market-risk-equivalent
assets is its measure for market risk (determined as discussed in the
following sections) multiplied by 12.5 (the reciprocal of the minimum
8.0 percent capital ratio).
An institution's measure for market risk is a VAR-based capital charge
plus an add-on capital charge for specific risk. The VAR-based capital
charge is the larger of either (1) the average VAR measure for the last
60 business days, calculated under the regulatory criteria and increased
by a multiplication factor ranging from three to four, or (2) the previous
day's VAR calculated under the regulatory criteria, but without the multiplication
factor. An institution's multiplication factor is three unless its back-testing
22 results or supervisory judgment indicate that a higher factor or other
action is appropriate.
An institution's risk-based capital ratio numerator consists of a combination
of core (tier 1) capital; supplemental (tier 2) capital; and a third tier
of capital (tier 3), which may only be used to meet market-risk capital
requirements. To qualify as capital, instruments must be unsecured and
may not contain or be covered by any covenants, terms, or restrictions
that are inconsistent with safe and sound banking practices. Tier 3 capital
is subordinated debt with an original maturity of at least two years.
It must be fully paid up and subject to a lock-in clause that prevents
the issuer from repaying the debt even at maturity if the issuer's capital
ratio is, or with repayment would become, less than the minimum 8.0 percent
risk-based capital ratio.
An institution must satisfy the overall conditions that at least 50 percent
of its total qualifying capital must be tier 1 capital and term subordinated
debt (excluding mandatory convertible debt), and intermediate term preferred
stock (and related surplus) may not exceed 50 percent of tier 1 capital.
In addition, an institution's tier 3 capital must not exceed 250 percent
of its tier 1 capital allocated for market risk (that is, tier 3 capital
is limited to 71.4 percent of the institution's measure for market risk).23
22. Beginning one year after an institution begins to
apply the market-risk rules, it must begin ''back-testing'' its VAR measures
generated for internal risk-management purposes against actual trading
results to assist in evaluating the accuracy of its internal model.
23. The market-risk rules (12 CFR 208 appendix E, section 3(b)(2)) discuss
''allocating'' capital to cover credit risk and market risk. The allocation
terminology is only relevant for the limit on tier 3 capital. Otherwise,
as long as the 50 percent tier 1 and tier 2/tier 3 condition is satisfied,
there is no requirement that an institution must allocate or identify
its capital for credit or market risk.
Internal Models
An institution applying the market-risk rules must use its internal model
to measure its daily VAR in accordance with the rule's requirements. However,
institutions can and will use different assumptions and modeling techniques
when determining their VAR measures for internal risk-management
purposes. These differences often reflect distinct business strategies
and approaches to risk management. For example, an institution may calculate
VAR using an internal model based on variance-covariance matrices, historical
simulations, Monte Carlo simulations, or other statistical approaches.
In all cases, however, the model must cover the institution's material
risks.24 Where shortcomings exist, the use of the model for the calculation
of general market risk may be allowed, subject to certain conditions designed
to correct deficiencies in the model within a given timeframe.
The market-risk rules do not specify modeling parameters for an institution's
internal risk-management purposes. However, the rules do include minimum
qualitative requirements for internal risk-management processes, as well
as certain quantitative requirements for the parameters and assumptions
for internal models used to measure market-risk exposure for regulatory
capital purposes. Examiners should verify that an institution's risk-measurement
model and risk-management system conform to the minimum qualitative and
quantitative requirements discussed below.
24. For institutions using an externally developed or
outsourced risk-measurement model, the model may be used for risk-based
capital purposes provided it complies with the requirements of the market-risk
rules, management fully understands the model, the model is integrated
into the institution's daily risk management, and the institution's overall
risk-management process is sound.
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