The largest U.S. banks on Tuesday announced fresh plans for stock buybacks and dividends following the Federal Reserve’s disclosure of positive annual stress test results, a sign that some of the world’s most systemically important lenders are sitting on more than enough capital.

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Wall Street's largest lenders boosted their dividends after passing this year's Federal Reserve (Fed) stress tests, a hurdle that regulators made easier to clear by softening some of the requirements laid out in previous years.