Lambda Upsilon Lambda (ΛΥΛ) has 74 undergraduate chapters (four of which are provisional chapters and one of which has been closed) and 15 graduate/professional chapters. The first undergraduate chapter was founded in Cornell University on February 19, 1982. Meanwhile the first graduate/professional chapter was established in Rensselaer Polytechnic Institute on November 14, 1998. The honorary Pi Sigma Chapter is reserved for deceased members of the fraternity.