A Keynesian Liquidity Trap?
"But this hardly indicates a liquidity trap, for at least four reasons: (1) Base money can only be held as reserves or currency, and the allocation of a massive base increase between the two tells you absolutely nothing about the overall demand for base money. (2) At the same time that the Fed stomped on the monetary accelerator, it began paying interest on bank deposits at the Fed, obviously increasing the demand for reserves. (3) A sudden SHIFT outward in the demand for base money does not in and of itself demonstrate a liquidity trap, as the history of bank panics teaches us. (4) You must allow for lags to see whether this incredibly sudden base increase works its way into the broader monetary aggregates. The year-to-year annual growth rate of M1 has already risen from 0 to over 7 percent, whereas that of M2 is up slightly from 6 to 7 percent."
Bryan also questioned whether all of the base increase was indeed going into reserves. Again, my comment:
"Accurate numbers on bank reserves are devilishly difficult to get and interpret, because the official figures are often adjusted for changes in reserve requirements and do not include excess vault cash, required clearing balances, and Fed float. But you can tease out recent estimates by going to the Fed's weekly H.3, H.4.1, and H.6 releases and by checking against how much of the base increase has ended up as currency in the hands of the general public. Using these means, I put total reserves for the entire banking system (not adjusted for changes in reserve requirements and not seasonally adjusted but counting all vault cash and clearing balances) at $72 billion in August. Currently, as of October 22, total reserves are somewhere between $343 and $358 billion. Notice how close this comes to matching the corresponding increase in the base, from $847 billion to $1,149 billion. The remaining increase constitutes currency in circulation."