Quantitative Risk Management

 

During its brief history, financial risk management has been a field dominated by quantitative models. This may be due to the influence of bank regulators who demand that capital charges be calculated—which is the same thing as quantifying risk. It may also be due to disinterested senior managers who want a "silver bullet"—a single number to summarize "risk" for them. Whatever the reason, a literature on techniques for quantifying market, credit and operational risk has proliferated. This book surveys some of that literature. The focus is on leading edge techniques. Many of these have been on the leading edge for some time now without being adopted by practitioners, so there is also an element of the "bleeding edge" here.

Topics the authors emphasize include generalizations of GARCH to multiple dimensions, copulas, extreme value theory and credit derivatives pricing. They round it out with summary chapters on value-at-risk, structural credit risk models and operational risk modeling. They generally present the current state of the literature and point to interesting avenues for further research.

Contents

1. Risk in perspective

2. Basic concepts in risk management

3. Multivariate models

4. Financial time series

5. Copulas and dependence

6. Aggregate risk

7. Extreme value theory

8. Credit risk management

9. Dynamic credit risk models

10. Operational risk & insurance analytics

This isn't a book for practitioners. It is written by three math professors, and the "bleeding edge" literature they describe routinely leads to dead ends. Academics looking for their next research project will be delighted, but risk managers scrambling to implement risk measurement systems will be frustrated. There is little indication of what is actually used in production models and what is merely hypothetical. Also, concepts aren't integrated into workable models. You are presented with lots of shiny pieces but no assembly instructions.

Academics will find much to mull over here. Lots of mathematical models are presented along with citations to the literature. The technical level is appropriately quite high.

Practitioners should read (my own) Holton (2003), Bluhm et al (2002) and Alexander (2003) for quantitative techniques in market, credit and operational risk, respectively. Academics should also start with those books, but then turn to this one for new avenues to explore. [9/30/05]

For related books, see sections:

Risk Management - General

Risk Management - Market Risk

Risk Management - Credit Risk

Risk Management - Operational Risk

Mathematics - Extreme Value Theory

Mathematics - Time Series Analysis

Finance - Financial Econometrics

 

 

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