What trading time frames are available on Zentrader? Zentrader Admin January 09, 2019 13:06 Updated Trading time frames from 30 seconds to end-of-day are available. For a current list, please see the Trading Schedule. Related articles How many options can I buy? What is the maximum position size? Do you have trading apps for PC, iPhone iOS and Android? What is the difference between Classic and On-Demand options? Do you offer option trading signals? Why are Zentrader’s prices different from other brokers?