Backtesting

MPF Portfolio

This MPF portfolio hypothesis uses the funds already tracked on the MPF page.

Hypothesis

Allocate a retirement portfolio as follows:

FundWeight
World Bond Fund40%
Global Equity Fund25%
Capital Stable Fund15%
Hong Kong Bond Fund15%
Asia Pacific Equity Fund5%

The requested allocation mentions Asia Equity Fund. The MPF page currently tracks Asia Pacific Equity Fund as the Asia equity exposure, so this post uses that fund’s MPF data.

Data Inputs

FundISINExpected annual returnAnnualised riskMarket correlation
World Bond FundHK0000844354-0.98%7.93%0.22
Global Equity FundHK00008442557.66%18.11%0.92
Capital Stable FundHK0000844297-1.05%9.96%0.55
Hong Kong Bond FundHK00008443620.97%4.24%0.25
Asia Pacific Equity FundHK00008442487.04%24.42%0.85

Portfolio Estimate

MetricValue
Weighted expected annual return1.86%
Estimated annualised risk7.90%
Risk-free rate4.50%
Estimated Sharpe ratio-0.334

The allocation is defensive: 55% is assigned to bond funds, 15% to the Capital Stable Fund, and 30% to equity funds. The result is lower equity exposure, but the expected return is pulled down by the World Bond Fund and Capital Stable Fund inputs in the current MPF dataset.

Read-Through

The portfolio may suit an investor who wants muted volatility and a large fixed-income anchor, but the current historical inputs do not compensate for a 4.5% risk-free rate. On these assumptions, the portfolio has a negative Sharpe ratio because the expected return is below the risk-free rate.

The key tension is the 40% World Bond allocation. It reduces equity drawdown risk, but its calibrated expected return is negative in the current data. If the aim is long-term capital growth, the hypothesis would need either a higher global equity weight, a lower bond allocation, or a different assumption about future bond returns.

Methodology

Expected return is calculated as the weighted average of the MPF funds’ expected annual returns from data/fund_metrics.json. Portfolio risk uses the MPF funds’ annualised standard deviations and the market-correlation assumptions from the same data source, with pairwise cross-fund correlation approximated from those market-correlation values.

This is a modelled allocation note, not investment advice. It excludes fees, taxes, contribution timing, member switching limits, and changes in fund factsheet data.

Fidelity MPF Portfolio Retirement