Hi Everyone
The opening prices are missing for some days in January 2002 for McDonalds.
If the dates are changed to January 2018 or more recent years you will see that all the data is available.
Have you run into this as well with your backtests?
From your experience what years should one avoid to ensure that pricing data is complete?
Do let me know when convenient.
Much appreciate and a pleasant evening
Savio