im looking for the complete intraday ticker data time-series for a number of securities that formerly were part of the s&p 500 index. eg.
PGN, Progress Energy Inc, removed from index 2012 because: Acquired by Duke Energy
wikipedia offers a list of some 250 former s&p 500 members. https://en.wikipedia.org/wiki/List_of_S%26P_500_companies.
do you know of any site from which the historical ticker data of these stocks may be downloaded? it must be free of charge and be available via an api that does not require manual interaction for each request (ie. it should be accessible "programatically").
alphavanta.co does work for all current members/securities, eg. GOOGL:
but does not seem to work for former members, eg. PGN:
thanks for any suggestions and apologies if this is not the correct community for this question. in that case, please indicate which is.