1 comesa financial stability assessment handbook gift chirozva business operations director deposit...
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COMESA FINANCIAL STABILITY ASSESSMENT HANDBOOK
Gift ChirozvaBusiness Operations Director
Deposit Protection Corporation email:
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Rating Methodology …
There are two dimensions on indicators:
Choice of indicator. Policymakers should have a wide range of indicators at their disposal, rather than relying on one single indicator, bearing in mind that each indicator has its own purpose
Indicator Thresholds. Policy tools could be based, at least in part, on certain values of indicators associated with those levels that signalled systemic stress in the past.
Threshold levels could be set at those values of the near-coincident indicators observed at the turning points identified in the past
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Indicators & Benchmarks
Source Rosenthal: www.newyorker.com/online/blogs/johncassidy/ -233.jpg 3
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Identifying SHIELDS benchmarks
Determination of benchmarks is very important so that one knows how to interpret the results.
Benchmarks should be established up front.
The SHIELDS framework employs the following benchmarks: Absolute benchmarks, e.g. CAR; EU Surveillance
Framework;
Z-scores: Deviations from the mean normalised by the standard deviation
Percentiles
Signal Extraction Method4
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The Weighted CAMELS Framework
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Quintile Scale Relevant Range
A “relevant range” for each indicator is established based on low-to-high distribution of the data set for all countries. Outliers that lie outside 2SDev from the mean are excluded to avoid distortion.
Quintile Scale
As the scale is based on quintiles, the scoring between the best ("1") and worst ("5") are based on a sliding scale.
Consider the following example: Given (a) Lowest Return on Assets: -1.5 per cent; (b) Highest Return on Assets: 3.5 per cent; it follows therefore, (c) Relevant Range = 5.0. 6
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Percentiles
Another possibility is to transform the variables in percentiles, using their sample cumulative distribution function – CDFs
In this case, the last percentile corresponds to a high instability period, while the value of the first percentile characterises a low stress level.
The other values around the median reflect an average risk level.
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Identification of Historical Crisis Episodes Lindgren, Garcia & Saal (1996) classify systematic
banking crises on the basis of whether bank runs, portfolio shifts, bank collapses or large-scale government intervention.
Any other episodes of financial stability are classified as non-systematic crises.
Demirguc-Kunt and Detragiache (1998a) use a achievement of at least one out of four criteria: proportion of non-performing loans to total
banking system assets exceeds 10%, or
the public bailout cost exceeds 2% of GDP, or
large scale bank nationalization, or
extensive bank runs are visible and if not, emergency government intervention is visible. 8
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Laeven & Valencia Data Set 2012 A banking crisis is defined as systemic if two
conditions are met: Significant signs of financial distress in the banking
system (as indicated by significant BK runs, losses in BK system (NPLs of 20%) & /or BK liquidations/ closures at least 20%.
Significant banking policy intervention measures in response to significant losses in the BK system.
Consider the first year that both criteria are met to be the year when the crisis became systemic.
Policy interventions are significant if at least three out of the following six measures have been used: 1) extensive liquidity support (5 percent of deposits
and liabilities to nonresidents)9
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Laeven & Valencia Data Set 2012 2) Gross bank restructuring gross costs (at least 3
percent of GDP).
3) significant bank nationalizations
4) significant guarantees put in place
5) significant asset purchases (at least 5% of GDP)
6) deposit freezes and/or bank holidays.
Liquidity support is extensive when the ratio of central bank claims on financial sector to deposits and foreign liabilities exceeds 5 % & more than doubles relative to its pre-crisis level.
Liquidity support extended directly by Treasury is also included.
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Reinhart & Rogoff Crisis Definitions
Inflation crisis – 20% or higher, extreme 40%
Currency crush – Annual depreciation of 15% or more or currency debasement of 5% or removal of several “zeroes.”
Banking crisis – bank run leading to closure or merger or no runs but large scale closure/takeover
Debt Crisis- failure by government to honour
Domestic debt crisis – freezing deposits or forced conversions.
Global Financial Crisis ???
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Has global effect on the level and volatility of economic activity as
measured by world aggregates of prices, real GDP, and trade; and
Is relatively synchronised across countries
Has four main elements: One or more global financial centres are mired in a
systemic crisis & also directlty or indirectly financial flows to numerous countries
The crisis involves two or more regions
The number of countries in each region is 3 or more
Composite GDP weighted by index average of global financial is one std deviation above normal
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Qualitative Example: Expert Opinion Index
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Global Macrofinacial Conditions
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The GLYOR Risk Scale
15Extreme
Minor
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Solvency Conditions - Current and future
Capital adequacy
Over-reliance on leverage
Weighted CAMELS framework (Banking v Market data based models; SIFS; DIFIS etc
Distance-to-Default (DtD), CoVaR
Expected Default Frequency (EDF)
Macro Stress Tests
Corporates Solvency
Solvency of Households
Solvency of the State / Nation16
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Home Economic Conditions
FSIs on key sectors
Home economic conditions (household, corporate, public and external)
Credit to GDP based prediction models – credit booms or crunches (GDP growth or GDP gap)
Equity prices growth
House price growth
Real effective exchange rate (REER)
Asset quality
Hard-wired Vulnerabilities
Current account developments
Debt Sustainability Analysis (DSA)
Market data based models subject to availability 17
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Institutional Quality
Institutional governance
Risk management
Infrastructure conditions
Systemic impact
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Earnings Conditions
Bank profitability
Income generation risk
Viability of coporates
Systemic impact
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Liquidity Conditions
Current & future developments in market,
monetary,
funding,
balance sheet, and bank liquidity
Short tem loans
Dollarisation
Systemic Liquidity Risk Indicator (SLRI)
Joint Distress models; CCA
Network Models 20
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Default Conditions Default Conditions
Impact of price changes
Systemic Default
Debt Sustainability Analysis (Government Debt)
Corporate debt
Household debt
Fiscal Stress Analysis
Credit to GDP Gap
Asset Price Models
House Price Acceleration21
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Systemic Loss
Systemic Loss [losses (to) depositors and creditors; deposit protection agencies; owners; the public sector fiscal accounts; on assets; and macroeconomic losses
NPLs
Structural VARS
DSGE Models
GDP at Risk Models
Systemic CCA
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