Risk Management for Asset-Management Companies
Introduction
A Primer on Portfolio Theory
Application in Mean–Variance Investing
Diversification
Frictional Costs of Diversification
Risk Parity
Incorporating Deviations from Normality: Lower Partial Moments
Portfolio Resampling and Estimation Error
Robust Portfolio Optimisation and Estimation Error
Bayesian Analysis and Portfolio Choice
Testing Portfolio Construction Methodologies Out-of-Sample
Portfolio Construction with Transaction Costs
Portfolio Optimisation with Options: From the Static Replication of CPPI Strategies to a More General Framework
Scenario Optimisation
Core–Satellite Investing: Budgeting Active Manager Risk
Benchmark-Relative Optimisation
Removing Long-Only Constraints: 120/20 Investing
Performance-Based Fees, Incentives and Dynamic Tracking Error Choice
Long-Term Portfolio Choice
Risk Management for Asset-Management Companies
Valuation of Asset Management Firms
Tail Risk Hedging
“For an asset manager the greatest risk is operational risk” (Hull 2007, p. 372). In 2008, however, asset-management companies came under severe profitability pressure from market rather than operational risks. What has been seen as an annuity stream that was thought to expose firms to little or no earnings risk materialised as directional stock market exposure combined with high operational leverage (high ratio of fixed to variable costs). While operational leverage led to what has been praised as a scalable business (low costs of taking on additional business) in good times, it was always clear that this would lead to massive losses in bad times. In short, asset managers partially share a client’s benchmark risks. As client benchmarks went down, so did asset-based fees (percentage fee applied on average assets under management (AUM) within a year), which still represent the bulk of fee agreements in the asset-management industry.
At the same time, operational leverage increased the downturn in profits. A small example should make the mechanics clear. Suppose we have an asset manager with US$100 billion AUM, 50bp fees and 35bp total costs and an operational leverage of 90% (31
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