Two common approaches to investment portfolio construction are bottom up investing and top-down investing. A bottom-up investing approach is essentially a stock-picking method where you focus on individual security selection rather than a portfolio’s allocation to various countries, company-sizes, security types or other characteristics.
However, we prefer a top-down investing approach. This method emphasizes broader economic factors. The strategy determines the allocation and selection of assets based on macroeconomic characteristics and how they expect to affect different areas of the market. Once the investors have identified the areas they think will perform well, they can select individual securities within those areas.
In a bottom-up portfolio, the shape and direction of the total portfolio is a result of the assets that comprise it. The total portfolio’s main focus will generally be around the performance of the individual securities and how each of them performs in the short term. A bottom-up portfolio may be limited to the investor’s knowledge of individual securities and may lack a coherent strategy as the primary focus is stock selection. In other words, rather than looking for the needle in the haystack, it might be better off looking for the haystack with the most needles.
Alternatively, a top-down portfolio is where broader economic analysis and forecast drives tactical decisions. A top-down portfolio considers the wider economic and macroeconomic context before moving to security selection. If the economic forecast is for a healthy economy, you should likely invest. Your analysis and forecast should then guide which security characteristics—such as sector, style and country—should be targeted.
Many investors and industry professionals still tend to take a bottom-up approach to investing despite its potential limitations.
We believe the majority of your investment returns are a result of asset allocation—your portfolio’s mix of stocks, bonds, cash and other securities. Therefore, asset allocation likely plays a more significant role in your long-term portfolio returns than individual securities.
For example, compare an all-cash portfolio with an all-stock portfolio. Over time, you would see a much bigger difference between the all-cash and all-stock portfolio compared with two all-stock portfolios holding different stocks. The type of assets you hold plays a major role in determining the kinds of returns you receive over longer periods of time. Because of this, we believe you should first consider selecting the right asset class to invest in before analyzing individual securities.
When investing in stocks, you should consider the overall market environment and decide where to invest based on the outlook for each country, sector or company size and how they have performed at similar points in earlier market cycles. For example, if you find that late in bull (upward trending) market, mega-cap stocks have historically performed better, you may want emphasize these stocks in your portfolio. Such a task requires a fixation on detail that introduces an inherent bias into the research process, which could divert your attention away from your longer-term investment goals.
We believe 70% of investment returns are attributable to a portfolio’s asset allocation, 20% to category decisions—what we call sub-asset allocation—and 10% to the selection of individual securities. Exhibit 1 shows the progression of our 70/20/10 model for reference:
Exhibit 1: Fisher Investments’ 70/20/10 Investment Approach
*Forward-looking return attribution is an approximation intended for illustrative purposes and should not be considered a forecast of future returns or return attribution.
Here is a more detailed look at each step in the process:
Think Strategically: Select Assets to Match Your Goals
Your long-term goals should determine your investment strategy in a top-down approach. A well-designed portfolio should be personalized to match your individual situation. You should put a lot of thought and analysis into which asset classes will most likely help you reach your long-term investing goals.
Since every investor is different, there is no magic formula for the right mix of assets. It depends on your unique set of financial goals, needs and risk tolerance. If you have significant growth needs, you may be better off investing in assets that have historically provided higher returns along with higher short-term volatility, like stocks. If you require less growth and need more cash flow, you may be better off increasing your portfolio’s allocation towards assets that have historically provided lower long-term returns and lower short-term volatility, like bonds.
Think Tactically: Use Market Forecasts to Adjust Your Asset Selection
Once you have identified the right asset mix to match your goals, you can then make decisions on a tactical level to try to improve your portfolio’s performance over time.
Most of these decisions will be tied to market forecasting. Here are a few examples:
Portfolio management is complex as market conditions are always changing and financial media can be difficult to sort through. Having an adviser to do the research and keep you focused on your long-term financial goals can give you some peace of mind and helpful counsel.
We believe a top-down investment approach—one that selects assets based on higher-level analysis before security selection—is a key factor to our investing success. To learn more about Fisher Investments and our top-down investment process, download one of our guides or contact us at (888) 823-9566 to speak with one of our qualified professionals today.