Dilution to ensue as embattled bank bolsters capitalization NEW YORK (MarketWatch) -- Citigroup Inc. has finalized an agreement with the federal government that will recapitalize the company with $58 billion of new common stock and make the U.S. taxpayer its largest shareholder, the bank said Wednesday.Moving to bolster its capitalization, Citigroup /quotes/comstock/13*!c/quotes/nls/c (C 3.52, +0.11, +3.23%) unveiled an agreement under which the government will exchange up to $25 billion of the bank's preferred securities for interim securities and warrants. The deal, which puts a conversion price of $3.25 a share on Citi common, was originally supposed to be completed in...