By James Kwak
There is a common phenomenon in legal disputes over the value of something, be it a company, a piece of land, or a person’s expected lifetime earnings. Each side hires an “expert” who produces an estimate based on some kind of model. And miraculously, every single time, the expert for the party that wants a higher number comes up with a high number, while the expert for the party that wants a lower number comes up with a low number. No one is surprised by this.
Yesterday, the Federal Reserve posted the results of the latest periodic bank stress tests mandated by the Dodd-Frank Act. For these tests, the Fed comes up with various scenarios of how things could go badly in the economy, and the goal is to see how banks’ income statements and balance sheets would respond. The key metrics are the banks’ capital ratios; the goal is to identify if, in bad states of the world, the banks would still remain solvent. If not, the banks won’t be allowed to do things that reduce their capital ratios today, like paying dividends or buying back stock.
For the most part, the results look pretty good: capital levels even under the severely adverse scenario should remain above the levels reached during the 2008–2009 crisis. (Of course, there are several huge caveats here. You have to believe: first, that the scenarios are sufficiently pessimistic; second, that the banks’ current financials are accurately represented; third, that the model is sensible; and fourth, that the capital levels set by current law are high enough.)
But there’s something else going on here. As part of the stress testing routine, each bank is supposed to do its own simulation of how it would respond to the scenarios specified by the Fed, using its own internal model. And—surprise, surprise!—the banks virtually uniformly predict that they will do better than the Fed.
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