as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
how can i find out who the major short sellers are in a stock?
user
there is no way to know anything about who has shorted stuff or how concentrated the positions are in a few investors.  short positions are not even reported in 13(f) institutional filings. i'll take the bonus points, though, and point you to the us equity short interest data source at quandl.
assistant