margin call

Carlyle Group's troubled mortgage debt investment fund, Carlyle Capital, said Monday that it had asked lenders to halt further liquidation of collateral worth as much as $16 billion while the two sides discussed possible ways to repay debt.

Carlyle Capital, the investment fund linked to the private equity company Carlyle Group, said Friday that it was "considering all available options" after it received further margin calls, prompting some analysts to warn that more funds could struggle to meet increasingly tighter margin requirements.