Quote from black diamond:
I don't think the logic has to be all that sophisticated to have some value. Just the fact that a company has been mentioned in a headline is useful. I have seen academic papers that use news databases and show stocks with large returns accompanied by a headline react differently than stocks with large returns and no news, I am pretty sure I can find them if anyone cares.
would be interesting to have a look at these papers even if it looks to be grossly oversimplified approach...
