US Federal Reserve, Large Commercial Banks w consolidated Assets $300+, here. These stats show Total and Domestic Assets for 1700 banks 14.5 tn total and 13.1 tn domestic. The results are available historically back to 2003.
The Federal Reserve Board compiles quarterly data on domestically chartered insured commercial banks that have consolidated assets of $300 million or more and releases the data about twelve weeks after the end of each quarter. The data are obtained from the Consolidated Reports of Condition and Income filed quarterly by banks (FFIEC 031 and 041) and from other information in the Board’s National Information Center database. Banks that are located in U.S. territories and possessions are not included in the table.
US Federal Reserve, Dodd-Frank Act Stress Tests, here . Comprehensive Capital Analysis and Review, here. 6 years of scenarios (Severely Adverse, Adverse). The Supervisory historical data gives a quarterly view of top level market and macroeconomic variables back to 1976. It will be useful when NIMO moves to forecasting security models and stochastic market models. This data is listed under the tab Banking Information & Regulation and the menu item Stress Tests and Capital Planning
US Federal Reserve, Bank Assets and Liabilities, here. Data Download Program. Financial Accounts Guide, here. This table list the breakdown of products from 2016Q1 back quarterly to 2014Q3 and annually back to 2012.