The investor fee is equal to the Yearly Fee times the principal amount of your securities times the index factor, calculated on a daily basis in the following manner: The investor fee on the inception date will equal zero. On each subsequent calendar day until maturity or early redemption, the investor fee will increase by an amount equal to the Yearly Fee times the principal amount of your securities times the index factor on that day (or, if such day is not a trading day, the index factor on the immediately preceding trading day) divided by 365. The index factor on any given day will be equal to the closing value of the Index on that day divided by the initial index level. The initial index level is the value of the Index on the inception date.
The above is taken from an ETN I am considering, given that the "Yearly Fee " is 0.89% is this basically saying that the fee is .89% of profit/loss on any given day? Do you think this is a good fee and am I right in thinking that volatility in the market it is tracking could lead to high charges?