On the other end of this trade, if you are a seller of options, you have the obligation to buy the stock at any time if you sell Puts, and sell the stock at any time if you sell Calls.

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One never knows, unless highlighted in a feature article in the Wall Street Journal as has happened in the past, whether or not he is getting margin calls at any given moment in time for a divorce or other cash needs like a new airplane or boat.

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The AeroMobile system, which has been available on Emirates flights since 2008, allows for six calls to be made by passengers at any one time (soon to be upgraded to eight), and unlimited texts and data usage.

CNN: In-flight phone calls to become standard, say experts