With its annual meeting looming and its stock on the decline, Apple is facing a rebellion from an activist investor who wants the company to stop stockpiling cash and give it to shareholders instead.

Greenlight Capital said Thursday that it is suing Apple in a New York federal court over the company's proposal to eliminate preferred stock. David Einhorn, who heads the investment fund, said the proposal would close down one avenue for Apple to reward shareholders with more cash.

Apple is still the world's most valuable company, but its stock has lost 35 per cent of its value since September, as it's become obvious that its once-rapid growth has slowed down.

The company is fabulously profitable, and Wall Street wants the company to share more of that money with its shareholders rather than tucking it away in low-yielding bank accounts.

"Apple has US$145 per share of cash on its balance sheet. As a shareholder, this is your money," Einhorn said in a letter to the company.

Its US$137 billion in cash makes up nearly a third of Apple's stock market value. Shares of the Cupertino, California company traded at US$459.50 in the early afternoon Thursday, up US$4.82, or one per cent, from Wednesday's close.

Corporations normally don't hoard cash the way Apple does. They keep enough on hand for immediate needs, and either invest the rest in their operations or hand it out to shareholders in the form of dividends or stock buybacks. If they need more cash for, say, an acquisition, they borrow it.

Einhorn told CNBC on Thursday that Apple was acting like his grandmother 'Roz' who grew up during the Great Depression. People who've experienced financial trauma, he said "sometimes feel like they can never have enough cash."

Roz was so careful about saving money, Einhorn said, that she never left messages on his answering machine out of concern that she'd be charged for the call.

Einhorn's criticism hints at Apple's lean years in the mid-90s. Former CEO Steve Jobs came out of that experience with a very tight hold on the company's purse strings.

Apple has never explained its reasons for hoarding the cash other than to say it is preserving its options. Since his death in October 2011, Apple has begun paying a quarterly dividend of US$2.65 per share and started to repurchase some of its shares.

Analysts say the company should be doing more if it wants to lure investors back to its shares. Stuart Jeffrey at Nomura Securities calculates that Apple will generate about another US$103 billion over three years to add to the US$137 billion it has now, but it has only committed to returning US$45 billion of this US$240 billion in total cash to shareholders.

Wall Street didn't complain much about Apple's hoarding policies until its revenue growth started slowing. In the recent holiday quarter, Apple's revenue rose 18 percent from a year ago — a very good figure for a company of its size, but a far cry from the 50 per cent-plus increases it has often posted since the 2007 launch of the first iPhone.

Apple hasn't launched a new groundbreaking product since the iPad in 2010, so the company is forced to expand the appeal of its current products to achieve growth.

The slowing growth has scared away investors who focus on fast-growing companies, and the relatively small dividend means the company doesn't get much respect from investors who look for regular income, analysts say.

- AP