The very largest U.S. financial institutions would weather a severe economic downturn, according to the results of the most recent stress tests mandated under the Dodd-Frank Act.

The Dodd-Frank Act Stress Test (DFAST) of 2015 projected hypothetical loan losses totaling $340 billion over nine quarters at the 31 institutions tested. Its "severely adverse" scenario paints a particularly grim picture: 10 percent unemployment, a 25 percent drop in home prices, a 60 percent stock market slide and a notable rise in stock market volatility.

According to the Federal Reserve, those 31 firms’ aggregate tier 1 common capital ratio would tumble from an actual 11.9 percent in the third quarter of 2014 to a minimum level of 8.2 percent in this hypothetical scenario.  This hypothetical post-stress minimum is significantly higher than the 31 firms’ aggregate tier 1 common capital ratio of 5.5 percent measured in the beginning of 2009, the Fed said.

This is the fifth round of stress tests led by the Federal Reserve since 2009 and the third round required by Dodd-Frank. The 31 firms, which each hold more than $50 billion in assets, represent more than 80 percent of domestic banking assets.

The DFAST test is intended to complement the Comprehensive Capital Analysis and Review (CCAR), the results of which are slated to be released later this week.

The full results can be found here.