Recommend and Justify Asset Allocation Based on MVOPortfolio Number Expected Nominal Returns Standard Deviation Sharpe Ratio The portfolios shown are corner portfolios which as a group
Trang 1Level III
Principles of Asset Allocation
Summary
Trang 2Mean–Variance Optimization
Mean-variance optimization (MVO) provides a framework for determining how much to allocate to
each asset in order to maximize portfolio’s expected return at a given level of risk MVO is a risk
budgeting tool which helps investors spend their risk budget wisely.
Client needs and preferences must be considered in making asset allocation
decisions
Trang 3Criticisms of Mean–Variance Optimization
1 The outputs (asset allocations) are highly sensitive to small changes in the inputs
2 The asset allocations tend to be highly concentrated in a subset of the available asset classes
3 Many investors are concerned about more than the mean and variance of returns, the focus of MVO
4 Although the asset allocations may appear diversified across assets, the sources of risk may not be diversified
5 Most portfolios exist to pay for a liability or consumption series, and MVO allocations are not directly
connected to what influences the value of the liability or the consumption series
6 MVO is a single-period framework that does not take account of trading/rebalancing costs and taxes
Some techniques for addressing the limitations of MVO:
• Reverse optimization
• Reverse optimization tilted toward an investor’s views on asset returns (Black–Litterman)
• Constraints on asset class weights to prevent extremely concentrated portfolios
• Resampled efficient frontier
Trang 4Recommend and Justify Asset Allocation Based on MVO
Portfolio
Number Expected Nominal Returns
Standard Deviation
Sharpe Ratio
The portfolios shown are corner portfolios which as a group define the risky-asset efficient frontier in the sense that any portfolio on the frontier is a combination of the two corner portfolios that bracket it in terms of expected return
A foundation’s return objective is 6.5% The risk free rate is 2.2%
Determine the most appropriate strategic asset
Trang 5Asset Allocation and Economic Balance Sheet
Emma Beel is a 45-year-old tenured
university professor in London
• GBP 1,500,000 in liquid financial assets
• NPV of human capital ≈ GBP 500,000
• Inherited home valued at GBP 750,000
Trang 6Liquidity Considerations
Less liquid asset classes include direct real estate, infrastructure and private equity; offer illiquidity
return premium
Two major problems associated with less liquid asset classes:
• Lack of accurate indexes challenging to make capital market assumptions
• Difficult to diversity and no low-cost passive investment vehicles
Practical options of investing in less liquid assets:
• Exclude less liquid asset classes; then consider real estate funds, infrastructure funds, and private equity funds.
• Include less liquid asset classes in the asset allocation decision and model the specific risk
characteristics associated with the implementation vehicles.
• Include less liquid asset classes in the asset allocation decision and model the inputs to represent the highly diversified characteristics associated with the true asset classes.
Trang 7Risk Budgeting
The goal of risk budgeting is to maximize return per unit of risk
Three aspects of risk budgeting:
1 The risk budget identifies the total amount of risk and allocates the risk to a portfolio’s
constituent parts.
2 An optimal risk budget allocates risk efficiently.
3 The process of finding the optimal risk budget is risk budgeting.
Marginal contribution to total risk (MCTR) = rate at which risk changes with a small change in the
current weights = (Beta of asset class i with respect to portfolio) x (Portfolio return volatility)
Absolute contribution to total risk (ACTR) = amount asset class contributes to portfolio return volatility
= (Weighti)(MCTRi)
Asset allocation is optimal from a risk-budgeting perspective when the ratio of excess return (over the risk-free rate) to MCTR is the same for all assets and matches the Sharpe ratio of the tangency portfolio.
Trang 8Monte Carlo Simulation
• Monte Carlo simulation complements MVO
▪ Handles multiple periods
▪ Realistic picture of potential future outcomes
▪ Impact of trading, rebalancing and tax costs
• Monte Carlo simulation is particularly important when there cash inflows/outflows and returns vary over time
• Monte Carlo simulation allows us to evaluate robustness of an asset allocation
Trang 9Factor-Based Asset Allocation
Investment opportunity set can consist of investment factors
• Factors are based on observed market premiums and anomalies
• Factors used in asset allocation include: market exposure, size, valuation, momentum, liquidity,
duration (term), credit, and volatility
Factor/Asset Class Factor Definition
Compound Annual Factor Return
Standard Deviation
Total Return
Standard Deviation
Asset allocation should be performed in a space (risk factors or asset classes) where one is best
positioned to make capital market assumptions
Exhibit 20 Factors/Asset Classes, Factor Definitions, and Historical Statistics (US data, January 1979 to March 2016)
Trang 10Recommend and Justify Asset Allocation Based on Global
Market Portfolio
Global market-value weighted portfolio should be the baseline asset allocation
• Represents all investable assets minimizes non-diversifiable risk
• Investing in the global market portfolio helps mitigate investment biases such as home country bias
Proxies for the global market portfolio are often based only on traded assets, such as portfolios of exchange-traded funds (ETFs)
Global market portfolio is used a starting point in the reverse optimization process
Trang 11Characteristics of Liabilities That Can Affect Asset Allocation
1 Fixed versus contingent cash flows
2 Legal versus quasi-liabilities
3 Duration and convexity of liability cash flows
4 Value of liabilities as compared with the size of the sponsoring organization
5 Factors driving future liability cash flows
6 Timing considerations, such as longevity risk
7 Regulations affecting liability cash flow calculations
Trang 12Approaches to Liability-Relative Asset Allocation
Surplus optimization
1 Select asset categories and determine planning horizon
2 Estimate returns and volatilities for assets and liabilities
3 Determine constraints
4 Estimate correlations
5 Compute surplus efficient frontier
6 Select recommended portfolio
Hedging/return-seeking portfolios approach
Part 1: Asset allocation for liability hedging portfolio
▪ Possible techniques: cash flow matching, duration matching, immunization
▪ Factors driving asset returns ≈ factors driving liability returns
Part 2: Asset allocation for return-seeking portfolio
▪ Mean-variance optimization
Integrated asset–liability approach
Expected surplus return = (Δ asset value – Δ liability value) / Initial asset value
Δ liability value (or liability return) measures time value of money for liabilities plus any expected changes in the discount rate and future cash flows over the planning horizon
Integrated asset-liability approach is appropriate when decisions regarding
Trang 13Recommend and Justify a Liability-Relative Asset Allocation
Surplus Optimization Hedging/Return-Seeking Portfolios Integrated Asset–Liability Portfolios
Linear correlation Linear or non-linear correlation Linear or non-linear correlation
All levels of risk Conservative level of risk All levels of risk
Any funded ratio Positive funded ratio for basic approach Any funded ratio
Trang 14Goals-Based Asset Allocation Process
Exhibit 34: Goals-Based Asset Allocation Process
Goals can be categorized as:
• wishes
Goals can then be assigned an
Trang 15The Smiths have financial assets worth US$25 million The parents are in their mid-fifties, and the household spends about US$500,000 a year They expect that inflation will average about 2% per year for the foreseeable future They express four important goals and are concerned that they may not be able to meet all of them:
• They need a 95% chance of being able to maintain their current expenditures over the next five years
• They wish to have a 75% chance to be able to create a family foundation, which they wish to fund with US$10 million in 20 years.
Expected return 4.3% 5.5% 6.4% 7.2% 8.0% 8.7%
Expected volatility 2.7% 4.5% 6.0% 7.5% 10.0% 12.5%
Time Horizon (years) 20
500,000 488,759 510,000 487,325 520,200 485,896 530,604 484,471 541,216 483,050
2,429,502
Overall allocation is the weighted average exposure to each of the asset classes within each module.
Trang 16Heuristics and Other Approaches to Asset Allocation
Heuristic: rule that provides a reasonable but not necessarily optimal solution
“120 minus your age”
rule
120 – Age = Percentage allocated to stocks
Lacks nuances of target date funds’ glide paths
60/40 stock/bond
heuristic
Provides growth through stocks and risk reduction through bonds
Does not consider investor circumstances
Endowment model Large allocations to non-traditional
investments driven by investment manager skill
Complex and high-cost
Risk parity Each asset class should contribute
equally to total risk
Ignores expected returns; contribution to risk is highly dependent on the formation of the
investment opportunity set 1/N rule Equal weight to all asset classes Asset classes treated as indistinguishable in
terms of returns, volatility and correlations
Trang 17Factors Affecting Rebalancing Policy
SAA is the optimal allocation for an investor sticking to SAA represents a benefit; deviating from SAA represents a loss in utility
Disciplined rebalancing reduces risk and adds to return
Two major strategies: calendar rebalancing and percent-range rebalancing
• Calendar rebalancing has a lower cost
• Percent-range is a more disciplined risk control policy
▪ Rebalance to actual SAA weights or upper/lower edge or somewhere in between?
▪ What is the optimal corridor width?
Transaction costs The higher the transaction costs, the
wider the optimal corridor.
High transaction costs set a high hurdle for rebalancing benefits to overcome.
Risk tolerance The higher the risk tolerance, the wider
the optimal corridor.
Higher risk tolerance means less sensitivity to divergences from the target allocation.
Correlation with the rest of the
portfolio
The higher the correlation, the wider the optimal corridor.
When asset classes move in sync, further divergence from target weights is less likely.
Volatility of an illiquid asset class The higher the volatility, the higher the
optimal corridor.
Containing transaction costs is more important than expected utility losses.