James Picerno | Nov 03, 2021 07:27AM ET
It had to end eventually. The recent run higher in the Sharpe ratio for the Global Market Index (GMI) finally reversed in October. The decline marks the first time in eight months that this popular risk metric eased for GMI, an unmanaged, market-value-weighted portfolio that holds all the major asset classes (except cash).
GMI’s Sharpe ratio dipped to 0.95 last month after reaching a two-year peak in the previous month. The calculation is based on an annualized rolling 10-year window via monthly data and assumes a zero-percent risk-free rate throughout.
Risk-adjusted performance has slipped, but GMI’s rebound in October lifted it to a new record high. Accordingly, the index’s drawdown returned to zero last month, where it’s been for much of 2021.
GMI represents a theoretical benchmark for the “optimal” portfolio. Using standard finance theory as a guide, this portfolio is considered a preferred strategy for the average investor with an infinite time horizon.
Those assumptions are, of course, unrealistic in the real world. Nonetheless, GMI is useful as a baseline to begin research on asset allocation and portfolio design. GMI’s history suggests that this benchmark’s performance is competitive with active asset-allocation strategies overall, especially after adjusting for risk, trading costs, and taxes.
For added context, readers can use this basic risk profile for GMI alongside the current monthly updates on performance and expected return for the benchmark and its components.
The table below presents additional risk metrics for GMI and its underlying asset classes, based on a trailing 10-year window through last month.
Here are brief definitions of each risk metric:
Trading in financial instruments and/or cryptocurrencies involves high risks including the risk of losing some, or all, of your investment amount, and may not be suitable for all investors. Prices of cryptocurrencies are extremely volatile and may be affected by external factors such as financial, regulatory or political events. Trading on margin increases the financial risks.
Before deciding to trade in financial instrument or cryptocurrencies you should be fully informed of the risks and costs associated with trading the financial markets, carefully consider your investment objectives, level of experience, and risk appetite, and seek professional advice where needed.
Fusion Media would like to remind you that the data contained in this website is not necessarily real-time nor accurate. The data and prices on the website are not necessarily provided by any market or exchange, but may be provided by market makers, and so prices may not be accurate and may differ from the actual price at any given market, meaning prices are indicative and not appropriate for trading purposes. Fusion Media and any provider of the data contained in this website will not accept liability for any loss or damage as a result of your trading, or your reliance on the information contained within this website.
It is prohibited to use, store, reproduce, display, modify, transmit or distribute the data contained in this website without the explicit prior written permission of Fusion Media and/or the data provider. All intellectual property rights are reserved by the providers and/or the exchange providing the data contained in this website.
Fusion Media may be compensated by the advertisers that appear on the website, based on your interaction with the advertisements or advertisers.