Hello,

I need to collect historical data for multiple companies. While I wrote the code to do this and experimented with it, I realized that data which is returned differs sometimes, even though I am using the exact call. This is more than inconvenient because I can not rely upon the data which is collected. Has anyone experienced similar things or can someone tell me what I am doing wrong. In the attaced files, you can see my log data and how the outcome for collecting daily total returns varies for different trials.retrieve_returns_trials.zip A code snippet for five Rics is:

import logging

import eikon as ek

import pandas as pd

import time

logging.basicConfig(format='%(asctime)s : %(levelname)s : %(message)s', level=logging.INFO)

ek.set_app_key("your_key")

rics = ['CCL.N', 'NXGA.PK^E19', 'AFAQ.OQ^L22', 'GRLS.MC', 'GLXZ.PK']

for trial in range(5):

start = True

for ric in rics:

df, e = ek.get_data(

instruments=ric,

fields = [

'TR.TotalReturn1D',

'TR.TotalReturn1D.date'

] ,

parameters={"SDate": "2002-01-01", "EDate": "2024-09-15", "Frq": "D", "CH": "Fd"}

)

if not("Instrument") in df.columns:

logging.info("It seems like no data has been collected.")

logging.info(f"--------------------------------\n {df.head()} ----------------------------------\n")

if df.isna().sum().sum() > 0:

logging.info(f"Deleting NAs for ric {ric}")

df = df[df.isna().sum(axis = 1) == 0]

if start:

df_full = df.copy()

start = False

else:

df_full = pd.concat((df_full, df.copy()))

time.sleep(0.25)

df_full.to_csv(f"retrieve_returns_trial_{trial+1}.csv", index = False)