sharebuilder will let you buy put options, which are probably a better idea than a naked short for most people. Personally, I agree that Apple is way overvalue

sharebuilder will let you buy put options, which are probably a better idea than a naked short for most people. Personally, I agree that Apple is way overvalued... but it is tricky to time these things. It could go up a lot before it comes down. I remember a quote "The market can remain irrational for longer than you can remain solvent" - I don't remember who said it, but it's good advice.