Citigroup Inc., the biggest of the five banks that failed the Federal Reserve's stress tests last month, will give more disclosure about capital used by each unit to give investors a clearer picture of returns.

The figures, to be provided at the division level, should be disclosed around midyear, Chief Executive Officer Michael Corbat, 53, said at the firm's annual meeting today in St. Louis.

"We will be putting out equity allocations at a business- division level," Corbat said. The increased disclosure will give investors "more granularity to see the returns of our business against the capital" that executives allocate to each business, he said.

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