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Stress Testing Webinar Series: Macroeconomic Conditional Loss Forecasting Originally presented and recorded on October 29, 2013 Presented by: Moody’s Analytics

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Page 1: Stress Testing Webinar Series: Macroeconomic Conditional ... · Stress Testing Webinar Series: Macroeconomic Conditional Loss Forecasting ... – Ensure a resilient pool of unencumbered

Stress Testing Webinar Series:Macroeconomic Conditional Loss Forecasting

Originally presented and recorded on October 29, 2013

Presented by: Moody’s Analytics

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Agenda

1. Introductions

2. Overview

3. Consumer Loss Modeling

4. Structured Product Loss Modeling

5. Commercial/Wholesale Loss Modeling (non-public)

6. Commercial/Wholesale Loss Modeling (public)

7. Next Webinar: PPNR Models

8. Questions

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Introductions1

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Presenters for Today’s WebinarThomas Day, Senior Director, Regulatory and Risk SolutionsThomas works to solve difficult stress testing, capital planning, and risk management problems across complex portfolios and product sets for financial services institutions worldwide. His areas of focus include CCAR/DFA stress testing, pre-provision net revenue (PPNR) calculations, systems and methodologies, advanced liquidity risk quantification and reporting, capital planning, performance and balance sheet management.

Cristian de Ritis, PhD, Senior Director, Consumer Credit AnalyticsCristian leads a team of economists focused on consumer credit modeling and analysis for banks and other financial institutions. He provides regular commentary to clients and the media on the state of consumer credit markets and small business.

Luis Amador, Senior Director, Valuations & ConsultingLuis leads the Structured Finance Valuations and Advisory Team at Moody’s Analytics. His team is responsible for analyzing secured products globally and develops risk and regulatory software solutions. His team’s clients include banks, asset managers and insurance companies seeking credit analysis and market valuations for structured portfolios, including ABS, CLOs, TruPs CDOs, RMBS and CMBS securities and private deals.

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Presenters for Today’s Webinar

Chris Henkel, Director, Enterprise Risk SolutionsChris leads risk management engagements throughout North America. He has extensive experience in commercial credit and financial analysis, portfolio management, asset quality, loan loss reserve methodologies, credit administration, process redesign, and credit risk modeling. He has served as a credit risk instructor and is a frequent lecturer at industry conferences.

Danielle H. Ferry, PhD, Associate Director, Capital Markets Research GroupDanielle leads the development of Stressed EDF measures, a corporate credit risk metric providing probability of default forecasts conditioned on varying macroeconomic scenarios. Her experience in helping financial institutions manage risk stemming from macroeconomic factors includes the full-cycle development of numerous proprietary quantitative models.

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Overview2

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Stress-Testing Complexities» The stress-testing exercise is one of the biggest challenges undertaken

by the industry and regulatory community– Impacts numerous business processes and functional areas

– Achieving “best-practice” remains a work in progress

» The national policy objective – increase the loss absorbing capacity of banks for:– Losses under severe stress Higher capital, and higher quality capital

– Ensure a resilient pool of unencumbered liquidity to reduce over-reliance on the “lender of last resort”

» The objective of the banks: Satisfy the regulators, but also ensure that any firm infrastructure and/or reporting investments improve business processes and create firm-value

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Stress-Testing Complexities Create Many Questions

» Modeling losses under given economic scenarios is one of the most difficult aspects of the stress-testing exercise– Do you have enough reference default data by the right dimension?

» Industry

» Geography

» Product type

– Are you conditioning the models on the most important economic drivers of risk?

– Are the economic variables selected at the right level of granularity?» National v. Local markets?

– Are the models validated? Do you have required resources?

– Do you have challenger approaches that help you “triangulate” your loss estimates?

» How do you translate loss estimates to charge-offs and the ALLL?

» How do you reduce net interest income for growth in non-performing loans?

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Our Objectives Today?

» Given the criticality of loss estimation, and the need for different models by asset class, we will cover loss estimation for:

– Retail Exposures (non-mortgage)

– Structured Portfolios

– Wholesale C&I (non-public)

– Wholesale (public)

» During future webinars, we may revisit other asset classes:

– Mortgage

– CRE

– Municipal

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Macroeconomic Conditional Loss Forecasting of Retail Exposures3

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» Retail credit risk models for regulatory stress testing need to be sound, transparent and well understood by banks

» Estimate losses as a function of the probability of default (PD), loss given default (LGD) and exposure at default (EAD)EL = EAD * PD * LGD

» Variety of models are available – Panel, competing risk, transition matrices

– Loan or segment level models

– Choice depends on data availability and objectives

» Documentation is critical– Validation groups focus on each model's conceptual underpinnings.

– Validators review modeling decisions and assumptions in addition to forecast results

Best Practices in Consumer Credit Risk Modeling

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Macroeconomics Matter… Models Should Consider Broader Trends, Feedback Loops, etc.

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But Local Economics Can Matter Even More…Idiosyncratic Scenarios Stress Geographic or Industry Concentrations

2014Q1 Severely Adverse

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Economic Sensitivity Impacts Choice of Modeling Framework… Consider Economic Dynamics and Impact of Future Originations

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The Fed Provides 14 CCAR Variables at the US Level –but Other Variables for Credit Models May Be Necessary» Employment

» Unemployment Insurance claims

» Bankruptcy filings by chapter

» Consumer credit debt outstanding (revolving and non-revolving)

» Used car prices

» Sales volumes (car, truck, housing, retail)

» Oil prices

» Prime rate, LIBOR, other rate indices

» ABA/MBA delinquency rates

» Personal savings rate

» Debt service and financial obligations ratios

» Credit Forecast delinquency rates by product, vintage, geo, score

» Regionality of house prices, employment, etc. is critical

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Support Forecasts with External Data

» Champion/challenger models give a broader view– Over-reliance on single model technologies during last recession– Leverage strengths of multiple approaches– Fully transparent, back-tested and documented econometric loss forecasting models customized to

specific portfolios

» Benchmarking– Several sources of industry data exist across individual consumer credit products

» Credit bureaus, consortiums, ABS/MBS securities data

» Credit variables including volume, delinquencies, default, prepayment, etc.

– Industry data can fill in portfolio data deficiencies for modeling

» Size the approach to meet the needs of the institution– Banks of all sizes will need some sort of stress testing– Need to balance model complexity with institutional plans

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Macroeconomic Conditional Loss Forecasting of Structured Portfolios4

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Securitization: A Microcosm (and, sometimes, Macrocosm) of Institutional Balance Sheets

ResidentialMortgages

Corporates

CRE

Retail Auto

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Challenges in Stress Testing Structured Instruments

» Integration– Full Integration of all the data and models needed for Structured Finance is the biggest challenge– Requires multiple models and dedicated development resources

» Coverage– Credit and Cashflow models for certain asset classes may not exist

» Data– Requires addition of supplementary data, cleansing and validation– Loan Level not available for all asset classes

» Consistency – Models developed by different companies, with varying academic approaches, are inherently

different

» Transparency– Higher level of documentation requirements for all parts of the process - (bank has to “own” the

models)– Explaining strength of macro variables, non intuitive results, all analytic assumptions – Ongoing model validation to ensure model is applicable in new macro/credit environment

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Scenario Outcomes often seem Counterintuitive

» Static approaches can expose “thin tranche” and “cliff” effects– Seemingly innocuous changes in assumptions (e.g. default and prepayment vectors) can drive

significant movements in cash flows– Price can jump higher in more Adverse scenarios vs. Baseline– Main cause: overcollateralization-based triggers cause cash lock-up– Magnitude of the effects varies depending on position in the capital structure

0%

20%

40%

60%

80%

100%

1% 2% 3% 4% 5% 6% 7% 8% 9% 10%

Collateral Loss

Tran

che

Pric

e Collateral Loss ∆1%

Tranche loss ∆100%

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Our Approach

» Macro Economic Scenarios– Fed Scenarios, Moody’s Analytics Scenarios, Custom Scenarios

» Credit models– Retail, Consumer, Residential Mortgage

– Commercial, Corporate» Cashflow Libraries

– Full Global Waterfall Coverage

– Loan and Pool Level Data» Portfolio Risk Management Software

– WSADesktop» Regulatory and Risk Management Metrics

– Estimated PD’s, SSFA, OTTI, Interest Rate Sensitivities Cashflows» API’s

– Integrate all content programmatically» Advisory & Valuations

– “Moody’s Analytics Opinion”

– Help prepare financial entity for regulatory review

Fully Integrated Solution for Stress Testing & Risk Management

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Stress Testing Structured Finance Requires Many Steps

Step 1 – Collateral Validation Stage

Assign PD to Guarantors

Non Cash Reserve Funds

Liquidity Facilities

Hedges-F/X, interest rates, basis swaps

Servicers

Custodian Banks

Step 3 – Credit Models Stage

Step 4 -Counterparty Risk Stage

Step 5 –Optionality Stage

Step 6 – Loss & Income Cashflows

Step 7 – Estimated OTTI and SSFA

Incorporate Economic Forecasting into PD framework

Custom Scenarios

Fed Scenarios

Resi

Commercial

Corporate

Consumer

Esoteric

Static / Stochastic capabilities

Collateral PD’s

Validate and Clean Trustee Loan Level & Performance Data

Append Data points required by Credit Models

Map Identifiers for Credit Models

Attachment, Detachment, Delinquency Data, for SSFA

Issuer Call

Investor Call

Income and Losses

Collateral & Tranche Losses

For All Fed & Custom Scenarios

Market Color Integration

Discount Rates

All scenarios

FR Y-14Q

FR Y -14M

Step 8 – Regulatory Reporting Stage

Step 2 – Economic Forecasting Stage

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Analytical tool for stress testing structured portfolios

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Macroeconomic Conditional Loss Forecasting of Wholesale C&I (Non-Public) Portfolios5

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Our Stress Testing Framework Links Macroeconomic Factors to Credit Risk Measures – and Charge Offs

Scenario

Δ in Expected

Loss Δin

10-

yr

Trea

sury

Yie

ld

Δin

1-y

earF

ed

Fund

s Ta

rget

Δin

Cor

e G

oods

C

PI

Δin

Con

sum

er

Con

fiden

ce

Δin

Spe

c G

rade

Sp

read

s

Δin

Non

-Far

mBi

z Pr

oduc

tivity

Oth

ers

S1 ?

S2 ?

S3 ?

S4 ?

S5 ?

ScenarioConditions

External Impacts

Internal Impacts

Financial Impacts

CapitalImpacts

Δ inProbability of Default Δ

in 1

0-yr

Tr

easu

ry Y

ield

Δin

Cor

pora

te

Tax

Rat

e

Δin

1-y

earF

ed

Fund

s Ta

rget

Δin

Cor

e G

oods

C

PI

Δin

Wag

es a

nd

Sala

ries

Δin

Con

sum

er

Con

fiden

ce

Δin

Spe

c G

rade

Sp

read

s

Δin

Non

-Far

mBi

z Pr

oduc

tivity

Oth

ers

--- … … … … … … … … …

• The macroeconomic variables are drawn from those specified by the Federal Reserve in CCAR process. Moody’s and the client will jointly determine the macro-variables to be considered

• In advance of modeling, segmentation is performed for appropriate granularity (e.g., geography, industry, etc.)

• The PD, LGD, and EAD models are used to calculate the EL –and translate those to charge-offs at the segment level

• The output will also be used to calculate rating transitions and future portfolio balances

HISTORICAL DATA PREDICTIONS (Via regression model)

Independent “explanatory” variables(macroeconomic factors) Regression modeled

Predictions Values of macro factors from

forecast scenarios

iii

i XFactor εβα +∆×+=∆ ∑ ]%[%

Our goal is to translate the relationship between scenario conditions and their impact

Dependent variables(credit risk measures,

such as PD)

FOR ILLUSTRATION

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A typical stress testing engagement tends to follow a five-phase process

Phase 1:Inputs (PD)

» Segment the portfolio

» Start with initial PDs

» Cycle-adjusted PD (e.g., RiskCalc CCA)

» Rating to PD Mapping

» Develop initial PD models

Phase 4: Back-Testing

» Test for fit, level, stability, and intuition

» Compare with historical experience

» Document methodology, assumptions, and findings

Phase 2:EL Components

» Construct facility-level LGD and EAD models

» Estimate changes in PD, LGD, and EAD based on macro variable forecasts

» Decide from candidate models

» Expected loss = PD*LGD*EAD

» Distribute EL across a future time horizon (aka “loss emergence”) to capture NCOs

» Forecast balance projections

Phase 5:Support

» Support during model validation

» Often an iterative process

» Generally extends through submission or “sign-off”

» May include implementation support

Phase 3:Loss Forecast

Validation and SupportEstimation of EL and NCOInitial PDs

Phases of a Typical Engagement

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0

200

400

600

800

1,000

1,200

1,400

1,600

1,800

1Q90

4Q90

3Q91

2Q92

1Q93

4Q93

3Q94

2Q95

1Q96

4Q96

3Q97

2Q98

1Q99

4Q99

3Q00

2Q01

1Q02

4Q02

3Q03

2Q04

1Q05

4Q05

3Q06

2Q07

1Q08

4Q08

3Q09

2Q10

1Q11

4Q11

3Q12

2Q13

1Q14

4Q14

3Q15

Adverse Severely Adverse Base

Time Series for the S&P 500 Index

Projected period: 2Q13 to 4Q15

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0

10

20

30

40

50

60

70

80

Rec

over

y %

def_price_adj

predicted

Comparing a Time Series of Actual to Predicted Performance is a Critical Validation Exercise

Recovery % = 1 – LGD %; e.g., 70% = 1 – 30%

Actual to Predicted Recovery Rates (1-LGD)

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Combined Framework: Time Series Expected Loss Projection (dollar value)

$-

$1,000,000

$2,000,000

$3,000,000

$4,000,000

$5,000,000

$6,000,000

$7,000,000

$8,000,000

$9,000,000

$10,000,000

Dec

-05

Apr-

06Au

g-06

Dec

-06

Apr-

07Au

g-07

Dec

-07

Apr-

08Au

g-08

Dec

-08

Apr-

09Au

g-09

Dec

-09

Apr-

10Au

g-10

Dec

-10

Apr-

11Au

g-11

Dec

-11

Apr-

12Au

g-12

Dec

-12

Apr-

13Au

g-13

Dec

-13

Apr-

14Au

g-14

Dec

-14

Apr-

15Au

g-15

Dec

-15

Severely Adverse

Adverse

Base

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Macroeconomic Conditional Loss Forecasting of Wholesale C&I (Public) Portfolios6

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A Structural Model Relating PDs to Macroeconomic Scenarios Has the Advantage of Highly Intuitive Results

BL S1 S2 S3 S4

Low GDP Growth High PD

High GDP Growth Low PD

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Loan Level Model or Pool Level Model? How About Both?

Firm-level PDs conditioned on macroeconomic variables

Macroeconomic factors affect the economy-wide distribution of default risk:

We model the discrete-ized distribution of economy-wide PDs

Macroeconomic factors affect sectors and individual firms differently:

We model sector- and firm-level default risk on idiosyncratic and macroeconomic factors

Moody’s Analytics’ Stressed EDF model consists of two sub-models: one to capture the economy-wide effects and another to capture sector- and firm-specific effects

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Choice of Macroeconomic Variables Should Be Based On Theoretical Groundings Specific to the Asset Class

MACROECONOMIC

Driver North America

Western Europe

Real GDP growth X X

Real consumption growth X

Real investment growth X

Real export growth X X

Unemployment rate X X

CPI inflation rate X X

PPI inflation rate X X

Corporate profit growth X

FINANCIAL

Driver North America

Western Europe

Stock index growth X X

Yield curve X X

Short-term interest rate X

Baa spread X X

Ted spread X X

S&P 500 volatility X

* Wherever possible, firms are matched up with macroeconomic or financial data specific to their country of incorporation. The W. Europe models also include US real GDP growth, to proxy for global growth. In the aggregate-level models, we use weighted averages of the constituent countries’ macro drivers, where the weights are based on each country’s representation in the Public Firm EDF universe. The yield curve is defined as the long-term less the short-term government bond rate. The Baa spread is defined as the Moody’s Baa yield less the 10-year Treasury yield. The Ted spread is defined as 3-month LIBOR less the 3-month T-bill yield. The 30-day moving average of the standard deviation of the percent change in the S&P 500 is used to measure volatility.

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In a CCAR-Style Stress Test, PDs Are Often the Most Difficult Piece of the Puzzle

[ ] EADLGDPDLossE ××=

40% / 45% / 50%

−⋅⋅⋅

−−= ++

121

2412

1

112

1

1001

1001

10011 ttt

tSEDFSEDFSEDFCEDF

$1

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Hypothetical Stress Test of Financial C&I Exposures

Baseline Scenario “Second Recession” Scenario “Protracted Slump” Scenario

Source: Moody’s Analytics

05

10

15

20

25

2013m

1

2014m

1

2015m

1

2016m

1

2017m

1

2018m

1

U S

05

10

15

20

25

2013m

1

2014m

1

2015m

1

2016m

1

2017m

1

2018m

1

C o r e E u r o p e

05

10

15

20

25

2013m

1

2014m

1

2015m

1

2016m

1

2017m

1

2018m

1

P e r i p h e r a l E u r o p e

A s s u m e s 4 5 % L G D

A v g C u m u l a t i v e E x p e c t e d L o s s - F i n a n c i a l s

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Simulated Stress Test for C&I Loans at DFAST/CCAR Banks

BHC Default Rate

Historical Default Rates vs. EDFs

Target BHC EDF

Simulated BHC Portfolio

PD = Stressed EDF

LGD = 45%

EAD = 1

BHC EL

Aggregate: 7.0% (MA) vs. 6.8% (Fed)

0

2

4

6

8

10

Ally Financial Bank of America

BNY Mellon Citigroup Goldman Keycorp PNC Financial State Street U.S. Bancorp

Fed MA Fed Aggregate MA Aggregate

Source: Board of Governors of the Federal Reserve; Moody’s AnalyticsNotes: Not displayed is the Fed’s estimate of 49.8% for The Goldman Sachs Group.

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Summary

» There are many difficult choices and practical limitations when building a conditional expected loss model

» When modeling post-stress PDs for public C&I exposures, we take a unique and highly intuitive approach that explicitly captures both economy-wide, sector level, and firm level effects of changes in macroeconomic variables

» The model is flexible enough to accommodate any macroeconomic scenario, including the Fed’s supervisory scenarios and user-defined scenarios

» As the results of our 2012 & 2013 CCAR simulations for C&I loans show, this approach produces stressed PDs that are well-suited for CCAR-style stress tests, whether used as a primary or challenger/benchmark model

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Next Webinar7

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Moody’s Analytics Stress Testing Webinar SeriesMacroeconomic Conditional PPNR Forecasting

January 28, 2014 at 12:00pm EST

Join Thomas Day and other Moody’s Analytics experts for a webinar covering:

» The primary challenges confronting banks when forecasting macroeconomic conditional pre-provision net revenue (PPNR).

» Best practices for forecasting macroeconomic conditional PPNR.

» Tools and techniques used by Moody’s Analytics to address the challenges and/or close any gaps between best practices and current challenges.

Register at: http://www.cvent.com/d/64q8kn/4W

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Questions?8

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41moodysanalytics.com

Thomas DaySenior Director

Direct: [email protected]

7 World Trade Center at250 Greenwich StreetNew York, NY 10007www.moodys.com

Cris de Ritis, PhDSenior Director

Direct: [email protected]

7 World Trade Center at250 Greenwich StreetNew York, NY 10007www.moodys.com

Chris HenkelDirector

Direct: [email protected]

7 World Trade Center at250 Greenwich StreetNew York, NY 10007www.moodys.com

Luis AmadorSenior Director

Direct: [email protected]

7 World Trade Center at250 Greenwich StreetNew York, NY 10007www.moodys.com

Danielle Ferry, PhDAssociate Director

Direct: [email protected]

7 World Trade Center at250 Greenwich StreetNew York, NY 10007www.moodys.com

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Find out more about our award-winning solutions

www.moodysanalytics.com

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@MoodysAnalyticsStay current with the latest risk management and assessment news, insights, events, and more.

@dismalscientistView global economic data, analysis and commentary by Mark Zandi and the Moody's Analytics’ economics team.

@CSIGlobalEdRead the latest financial services education information

@MA_CapitalMktsKeep up to date on credit and equity market signals reflecting investment risk and opportunities for issuers and sectors.

7 World Trade Center250 Greenwich StreetNew York, NY 10007(212) 553-1653

121 North Walnut StreetSuite 500West Chester PA 19380(610) 235-5299

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