Other RICs such as ULSDFUSGCDFMc1 look fine. Code below and Excel screenshot below. Any idea why? import eikon as ek contract = 'ULSDCALMc' riclist = ["{}{}".format(contract, i) for i in range(1, 13, 1)] df30 = ek.get_timeseries(riclist, 'close', start_date='2017-01-01', end_date=today, interval='weekly') df30.reset_index('Date', inplace=True) df30.to_csv(pricespath + "ULSDCALM_frek.csv")