3

AYLIEN provides historical news content via an API. You can try it here. Full disclosure I work for AYLIEN.


3

This site has the company name, symbol, and index weight of all 3 indexes you are asking about. The data is not downloadable, however, simply copying and pasting the data from the page into a spreadsheet works as does scraping the page. SlickCharts.com


1

I created a site to collect some useful macro financial indicators and hopeful can continue adding more data in my spare time. Hopefully it can help you: https://datamatrixweb.com/


1

If you have access to Thomson Reuters customer zone, log in and look for GCODE Database. There is a type for delisting, but not very granular. If you don't have access to customer zone, see user guide, page 137: https://developers.thomsonreuters.com/sites/default/files/DSS_11_2_User_Guide.pdf


1

you can search for quantitative finance on SSRN


1

The best vendors that offer extensive intraday data on other exchanges, so far I know https://www.quandl.com, https://www.onetick.com and https://www.tickdata.com/


1

Try TallacOptions. They offer US markets data for sure.


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