If Saudi Arabia has to increase its production to cover Iran's oil, it would leave a razor-thin margin to cover for any other disruptions.

CNN: STORY HIGHLIGHTS

Was the money used to cover margin calls on bad trades?

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Those who look for near-term weakness cited potential for more selling of gold to meet margin calls and cover losses in other markets, as was reported during a decline from record highs Thursday when equities tumbled.

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Gold pulled back from its record highs this week when equities fell sharply Thursday, with several analysts at the time citing selling of gold to raise cash to cover losses and margin calls in equities and other commodities that were in a freefall.

FORBES: Analysts Look For More Gains In Gold, Although Some Wary Of Correction

Margin payments are widely thought to cover two-thirds of total CDS exposure.

ECONOMIST: Credit derivatives

The next time investors in the stock market buy shares on the margin that plummet in value, will we cover those errors too?

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They needed to be charging a higher margin than they were to be able to cover the losses from defaults and repossessions if house prices started to fall.

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Finally, the new insurance does not have enough margin for insurers or hospitals to help them costshift in order to cover deficits in teaching or other needs to create new doctors and cures.

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Distressed and defaulted paper, however, continued to knock the cover off the ball as credit opportunity investors sought out wide-margin opportunity.

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Then his broker offered some advice: Cash in those options, but instead of selling some of the shares to cover the exercise price and related taxes, just take out a margin loan.

FORBES: Out of Options