I understand how both operate, but generally speaking – for the sake of argument – suppose an ETF only invests in soybeans. How strongly linked is the pricing between soybeans in that ETF and on the commodities market? If the price of soybeans in futures goes down 20% in let’s say a 2 month time span, will the price of that ETF (which only invests in soybeans) also follow suit and go down 20% as well?