Failures of hedge funds, margin calls and shorting could lead to cascading falls in prices.

对冲基金、保证金追缴通知和做空行为的失败可能导致股价连续暴跌。

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Some traders faced margin calls, or demands for more cash collateral, in other asset classes, market participants said.

市场参与者说，在其他资产类别中，一些交易员面临着追加保证金的要求。

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Without cash on hand, the firm can't facilitate trades for its clients or meet margin calls for its own proprietary trades.

如果手头没有现金，它就无法为其客户促成交易，也无法满足其自营业务追加保证金的要求。

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It also happened at a time of day when margin calls would have snowballed.

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At that time, the whole system was in danger of collapsing as margin calls were made.

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Margin calls to traders from their brokers are also forcing liquidation in the market place.

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