I actually just showed you one example. It can work exactly the opposite way as well depending how the underlying moves, so you can end up with a scenario where, in my example, the inverse ends up much higher than the underlying after a round trip to the same point. Its really worth the time to play on excel, it was eye opening for me.Thanks, Sig,
You explain why it might be a GOOD idea to short leveraged ETFs as long as the fees aren't high; I have seen fees for them at IB at 5%/year. If a leveraged ETF can
deteriorate a lot through volatility, it will earn much more than 5%/year.
I am very intrigued by the idea of shorting the 3X pairs. They both deteriorate, and shorting the same amount of both should be close to a "low- risk, sure thing." Occasional rebalancing, and a cash cushion in the account would be required.
Bry
The bottom line is that you can't depend on one side to approach zero, so just shorting both doesn't work. And I'll save everyone the effort, even if you rebalance daily all the ETFs are actually pretty efficient about tracking the percent change in the underlying so you can't profit off shorting both and taking advantage of slippage and costs in their internal trading. There is some of that, but your daily rebalancing costs dwarf them.