It doesn't really do that either. A company's stock can be worth less than its liquid assets, book or enterprise value. Apple was in that situation not too many years ago. When the markets are negative about the company's prospects for growing their business (or think they may go out of business) they may well value the company at substantially under these accounting numbers. But even more importantly I don't think any AAPL investor is keen on the idea of a "floor" share price of less than 20% of the current market value. That would require (and be) an unmitigated disaster. In fact talk like that kind of makes me nervous.
AAPL is currently overpriced by a considerable margin. My triangulation between their terminal/enterprise and intrinsic value (net current assets plus operating DCF) puts them around $420 per share. This doesn't mean that's my "target price" that I am betting they'll drop to. That's what my estimation of the net present value of the operating cash and working capital. How big a bathroom Tim Cook has is of no consequence to how much cash they can readily generate from operations.
So if they were to drop below $420 a share I might consider them a bargain, but I'm preoccupied with picking up all the other available bargains that the market isn't hovering around like gnats the way they're obsessed with AAPL.
I would probably continue to keep their foreign investments, cash and equivalents because at any time, being the biggest target in the world, they could get embroiled in massive litigation or see other catastrophic events that might otherwise capsize a heavily leveraged company. The opposition to Apple holding that cash is using a circular argument... the people who are arguing that Apple should go spend the money as if it's burning a hole in their pocket are not considering that the excess cash is part of how they remained stable in a very economically uncertain period, and that growth of share of wallet isn't something they can just manufacture out of thin air... So it's not as if Apple can just spend the money and acquire even more share of wallet overnight.
They're already on top... it's time to pace themselves into sustained growth because there's more uncertainty ahead with Foxconn issues and the eventual depletion of the product line that Jobs had direct influence in, as well as shrinkage of overall growth because the remaining available pool of share of wallet shrinks as Apple scales upward.
If anything I'd say do a partial share buyback and avoid splits... don't fall into that pit of increasing speculative activity when you're the market leader. There's no advantage to it. The stock price will go up on scarcity alone. It may piss off some speculative yahoos who are hoping to jump on an "easy cash" train rather than do some homework around real investments, but dilution is always deleterious for those of us who are serious long term investors. Furthermore, if a management team knows what they're doing better than I do, I'd rather they keep the cash instead of pay me dividends because they can turn it into greater growth than I can. Dividends are great if you're invested in a company helmed by average managers who can keep generating steady operating cash but perhaps not better year over year returns than you...
But that's all relative. Even very few fund managers can consistently beat the S&P year over year... and those that do work for Warren Buffett... so why should Berkshire pay dividends? See what I mean?
A shrewd investor is cashing out of Apple and moving on to what's currently underpriced by the market.