Profiting from Interest-Rate Forecasts
Given the importance of interest rates, the media frequently report interest-rate fore-
casts, as the Following the Financial News box on page 85 indicates. Because changes
in interest rates have a major impact on the profitability of financial institutions, finan-
cial managers care a great deal about the path of future interest rates. Managers of
financial institutions obtain interest-rate forecasts either by hiring their own staff
economists to generate forecasts or by purchasing forecasts from other financial insti-
tutions or economic forecasting firms.
Several methods are used to produce interest-rate forecasts. One of the most pop-
ular is based on the supply and demand for bonds framework described in this chap-
ter, and it is used by financial institutions such as Salomon Smith Barney, Morgan
Guaranty Trust Company, and the Prudential Insurance Company.
5
Using this frame-
work, analysts predict what will happen to the factors that affect the supply of and
demand for bonds—factors such as the strength of the economy, the profitability of
investment opportunities, the expected inflation rate, and the size of government
deficits and borrowing. They then use the supply-and-demand analysis outlined in the
chapter to come up with their interest-rate forecasts. A variation of this approach
makes use of the Flow of Funds Accounts produced by the Federal Reserve. These
data show the sources and uses of funds by different sectors of the American econ-
omy. By looking at how well the supply of credit and the demand for credit by different
sectors match up, forecasters attempt to predict future changes in interest rates.
Forecasting done with the supply and demand for bonds framework often does
not make use of formal economic models but rather depends on the judgment or
“feel” of the forecaster. An alternative method of forecasting interest rates makes use
of econometric models, models whose equations are estimated with statistical pro-
cedures using past data. These models involve interlocking equations that, once input
variables such as the behavior of government spending and monetary policy are
plugged in, produce simultaneous forecasts of many variables including interest rates.
The basic assumption of these forecasting models is that the estimated relation-
ships between variables will continue to hold up in the future. Given this assumption,
the forecaster makes predictions of the expected path of the input variables and then
lets the model generate forecasts of variables such as interest rates.
Many of these econometric models are quite large, involving hundreds and some-
times over a thousand equations, and consequently require computers to produce
their forecasts. Prominent examples of these large-scale econometric models used
by the private sector include those developed by Wharton Econometric Forecasting
Associates and Macroeconomic Advisors. To generate its interest-rate forecasts, the
Board of Governors of the Federal Reserve System makes use of its own large-scale
econometric model, although it makes use of judgmental forecasts as well.
Managers of financial institutions rely on these forecasts to make decisions about
which assets they should hold. A manager who believes that the forecast that long-
term interest rates will fall in the future is reliable would seek to purchase long-term
5
Another framework used to produce forecasts of interest rates, developed by John Maynard
Keynes, analyzes the supply and demand for money and is called the liquidity preference framework.
This framework is discussed in a fourth appendix to this chapter, which can be found on the book’s
Web site at
www.pearsonhighered.com/mishkin_eakins
.
Chapter 4 Why Do Interest Rates Change?
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