Three senior executives are reported to have left Citigroup's stock division. The bank previously announced 20000 layoffs. As Citigroup begins a comprehensive restructuring, three senior executives in the stock trading business have resigned. The report quoted two unnamed insiders as saying that the departing employees include Tim Gately, the head of US stock sales, Thomas Lynch, the global head of major service sales, and Matt Brady, the head of US sales at Delta One. Last week, Citigroup announced plans to cut 20000 positions, with CEO Jane Fraser striving to save costs and increase returns.