If you purchase or sell a commodity future or sell a commodity option, you may sustain a total loss of the initial margin funds and any additional funds that you deposit with your broker to establish or maintain your position. If the market moves against your position, you may be called upon by your broker to deposit a substantial amount of additional margin funds, on short notice, in order to maintain your position. If you do not provide the requested funds within the prescribed time, your position may be liquidated at a loss, and you will be liable for any resulting deficit in your account.