What is a Poison Pill in Activism Finance? A Genius Way to Stop a Hostile Takeover Attempt What is a poison pill in the subject of activism finance? A poison pill is something that I had recently learned about in my senior capstone finance class several years ago, and that I recently came across again in my Carl Icahn and Bill Ackman video. A poison pill, is the contrarian state of Green Mail and of a hostile takeover, and it is [...]