It's reasonably easy (not trivial, not impossible) to track the trades of hedge funds, since they do have to disclose their transactions. And some guys will eve

It's reasonably easy (not trivial, not impossible) to track the trades of hedge funds, since they do have to disclose their transactions. And some guys will even tell you! [1] [2] [3] Why they make their decisions is another question. [1]: https://www.bloomberg.com/gadfly/articles/2016-09-14/herbalife-leave-it-for-icahn-and-ackman https://www.bloomberg.com/gadfly/articles/2016-09-14/herbali... [2]: http://etfdb.com/etfdb-category/hedge-fund/ http://etfdb.com/etfdb-category/hedge-fund/ [3]: https://whalewisdom.com/ https://whalewisdom.com/