I didn’t see it mentioned above but maybe it’s there. ProShares has a list of ETF’s that short sectors and indexes. I think the site is http://www.proshares.com. I have done quite well with these ETF’s, but keep in mind this market is extremely volatile. ProShares makes it easier for investors, like myself, that don’t have too much time to think about what we are doing, yet have a instinct of where the market is going!
Proshares offers short and double short ETFs which are much riskier. Do your homework wait for the next big run up (if there is one) before your purchase. You may want to do a bit of leveraging in case there are some unexpected run ups in the market.