According to reports, Greenlight Capital's David Einhorn, the man who is suing Apple in advance of its shareholder meeting, picked up $146 million in Apple call options during the fourth quarter of 2012.

This means that he has a $746 million position in Apple – and Apple is more than 11% of his fund's total value.

Apple will surely make or break Einhorn's year, writes The Motley Fool.

"Call options will give Einhorn the opportunity to make quick profits and help mitigate the losses associated with the 30%-plus decline in Apple's shares since September," claims that report.

"I think it's safe to say that Greenlight is in a hurry to make up for Apple's underperformance," it concludes.

We previously noted a Seeking Alpha report that noted that there was an: "Enormous amount of call options speculation" related to Apple's "Summer surge". A lot of these calls had "a strike of around $550 and higher, "that expire January 19 2013". There was some suggestion that the share price was kept low at the time these call options expired. We're not suggesting that these call options were the ones that Einhorn purchased, however.

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