summitV I E W The Cost of Opportunity by Ian Jameson
An interesting series of questions arise from this line of thinking: How do you know what the opportunity cost is? How do you know what you don’t know? Much of modern financial theory has defined opportunity cost as the return that an investor would receive from investing in a “risk-free” asset versus investing in a different financial asset. Investment professionals have then divided assets into classes such as bonds, stocks, real estate, cash, natural resources, foreign currency, collectibles and insurance products.
May 2011
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Stepping back from modern financial theory, the opportunity cost for an equity investor also includes the “return” that could have been achieved by investing in a local charity, re-insulating your home, taking a week-long backcountry trip, or sending your child backpacking around Europe. Quantifying these benefits is not something that modern financial theory, or anyone else, is able to accurately model. However, there are costs and benefits associated with each potential investment. When choosing how we donate,
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By this logic, the opportunity cost for an equity investor would be the return that they would receive from holding bonds, real estate, cash, etc. instead of their equity investment. Defining the relative returns of the various asset classes has been a bit of an art form as well; services like Standard and Poor’s and others provide indices for a variety of asset classes, the most familiar being the S&P 500, an index based on 500 large companies that trade in the US on the NY stock exchange and the NASDAQ. For many people, the S&P 500 serves as a benchmark for the concept of stock market return. The opportunity cost for holding cash or bonds, for example, would be the return that you could have generated if you’d invested in stocks, approximated by the return of the S&P 500.
summitVIEW
When you decide to pursue one action over another, the act you didn’t do is referred to as the opportunity cost; what you could have been doing if you weren’t doing what you’re doing. Weighing this cost after a decision has been made can lead to buyers’ remorse, or a validation of your action.