from empyrial import empyrial, Engine
start_date= "2018-06-09",
portfolio= ["BABA", "PDD", "KO", "AMD","^IXIC"],
weights = [0.2, 0.2, 0.2, 0.2, 0.2], #equal weighting is set by default
benchmark = ["SPY"], #SPY is set by default
rebalance = "1y" #rebalance every year