Think about it.... "ultra sideways ETFs" which is basically a form of spread trading in an instrument that trades like a stock.
"Introducing the Ultra Sideways ETF's - for the traders that can't avoid compulsive trading during the chop times!"
Like the ultralong and ultrashort ETFs, it would wither away into oblivion. Sounds like a great product!
It isn't necessery. You just need 2 ETFs one long and one short with 1-1 positions. Once the market swang one way, you close the position in the money and wait for the return to the mean for closing the position formerly in the red....