Four of the United States’ largest globally systemically important banks (GSIBs) are reporting earnings this Friday, October 14th: CitigroupC -1.4%, JPMorgan ChaseJPM -0.9%, Morgan StanleyMS -0.7%, and Wells FargoWFC -0.8%. Investors, economists, and a wide range of analysts and consultants will be dissecting these banks’ earnings looking for the direction not only of banks’ financial health, but also of the American economy.