Shareholders suing Apple over stock option accounting irregularities now claim Apple boss, Steve Jobs, made a billion dollars as a result of the scandal.

Reuters reports shareholders to have filed new legal documents in order to address judge Jeremy Fogel's decision that some of the fraud complaints were too old or insufficiently detailed.

The new papers claim four additional instances of stock options backdating by Apple management, placing the value of shares held by Jobs that were received in exchange for backdated options at nearly $1bn.

"The amended lawsuit, which grew to 153 pages from an original 86, also ties the Apple board closer to the backdating of shares to executives by alleging that the full board acted as the company's compensation committee when it signed off on options with false grant dates," Reuters reports.

The case seeks the return of any profits.