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by Migeru
Nearly two years ago, the following obscure press release was put out by the US Federal Reserve:
Federal Reserve: Discontinuance of M3 (November 10, 2005) There was much gnashing of teeth by assorted conspiracy theorists, myself included, that the Fed was hiding away the canary in the gold mine of monetary policy.
The reason this matters is that the rate of growth of the money supply is (approximately) the sum of the rate of "real" GDP growth and the rate of inflation. So by ceasing to report on the growth of the M3 money supply, the conspiracy theory goes, the Fed is destroying the evidence of any tampering with the inflation statistics and of its own runaway monetary policy (where the money supply is believed to be growing at higher than 10% per year).
Now, a few days ago, for a discussion in an open thread, I pulled this chart from the Wikipedia article on the US money supply.
Somewhat perversely, I decided to take the underlying data for the wikipedia charts and rescale the axes. For the top chart I did a logarithmic scale, which shows rates of exponential growth as constant slopes, and for the bottom chart I did a "logit" or logistic transformation.
In the light of this chart, it seems the Fed is actually right when it claims M3 does not appear to convey any additional information about economic activity that is not already embodied in M2 and has not played a role in the monetary policy process for many years.The link between the money supply and inflation, which is behind most conspiratorial thoughht regarding the publication of the M3 figures, is the so-called "monetary exchange equation":
Since it appears that the M2 money supply is constant fraction of the M3 money supply over the past 50 years, it really doesn't matter which of the two is substituted into the monetary exchange equation. So, it doesn't seem to me that the Fed was actually hiding any sort of smoking gun when it decided to discontinue the publication of M3 figures. Why assume ulterior motives when laziness suffices? Is all the M3 paranoia much ado about nothing? |
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The M3 money supply: much ado about nothing? | 29 comments (27 topical, 2 editorial, 0 hidden)
The M3 money supply: much ado about nothing? | 29 comments (27 topical, 2 editorial, 0 hidden)
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