They are not mirror opposites. They should be and are described as being, but they are NOT! Check out historical prices for both going back 1 month, 2 months, and 3 months. I have researched this and their net gain is way under 0% for all 3 time periods. I could accept a little under 0 due to fund fees, but if you buy both with the same amount of money, you lose most of your money over time. FAS and FAZ have both caught my attention, but beware - they are scams!
Financial Naked Calls, Post-Geithner [View article]