Exchange trade funds were use to be able to know you own a share in a company. The value of it is also the value of share. The value of share is equated at Assets - Liabilities = Equity. The equity, can be any value in what efforts you change the value of assets and liabilities. This process is professional for those who 'edit' those (the assets and the liabilities) basis (financial statement) because for them it is legitimate. The value of it stimulates a person to buy the shares. So, even the price is cheap for someone, it might be the Assets and Liabilities are not in their truly values. Another thing, they use it to lessen their liabilities to make it appear they pay their liabilities. (?)