Yeah, SPY has a beta of 1, but if you short it you automatically have a beta of -1. There are some short ETFs available. That is, they move exactly opposite, so you actually buy them to have short exposure to the market. Search for them, I can't remember the tickers.
Right. If you want to increase your beta exposure to the S&P, buy ES or SP futures....to decrease your exposure, short the ES or SP.
Does anyone know, if there is a website, which can calculate the beta ratio for various stocks (indices) over different timeframes etc. for free? I took once the historical quotes from www.yahoo.com and implemented them in a spreadsheet (Excel) and calculated the beta by hand, but this is really time consuming. Thanks Hamrawein
But what if I wanted to play the spread between something that is negatively correlated to the market. Shorting SPY wouldnt work because there is no spread to speak of. Thats why I would want something with an actual negative beta. I believe they used to think gold was but thats doesnt seem to be the case.