Is it possible to disable the set benchmark function in zipline? I saw in the zipline/finance/trading.py the __init__ function always need some bm_symbol with default SPY. Is it possible that I only run my own portfolio (with my own data) without downloading the information of the benchmark?
It looks like in zipline/data/loader.py and benchmark.py, it downloads the data from IEX trading, which only allows 5 years data. Does it mean there will be problems if I cannot open IEX API link (either I do not have connection, or my wifi cannot connect to this link)? or I will have problem for running time period longer than 5 years locally?
Thanks!