Here's a brief history:
* 1930s - 1950s: The Three Stooges' films were produced by Columbia Pictures.
* 1987: Columbia Pictures was acquired by Sony Corporation, becoming Sony Pictures Entertainment.
* 2009: Sony Pictures Classics acquired the rights to the Stooges' entire catalog, including films, television shows, and other works.
Therefore, Sony Pictures Entertainment is the current holder of the copyright to The Three Stooges' collected works.