She works for an 'advertising agency' [=('chiefly US') 'ad agency'] in New York.
They are 'advertising' the new edition of the book.
These is a lot of 'advertising' in that magazine.
(..) Thank you for your diary! Face-time! I'd like some face-time! -Just remember, we're here just to gather information! We're gathering information, we're not advertising our short-position! Right? We don't want to spook anybody! Can we do that? You got a big mouth, and you like to run it (..)2015 The Big Short