In late 2017, the University of Massachusetts Amherst Libraries participated in the David Lewis and Michael Roy “2.5% Commitment and Open Data Collection Tool Project.” This exercise provided a benchmark of collection and infrastructure investments to date, and it brought into focus the opportunity to articulate the Libraries’ intentions for their collections going forward. The UMass Amherst Libraries provide a case study of an academic library collection that is pivoting from materials produced by proprietary publishers to a mix of investments in unique and special collections; open access publishing, content and infrastructure; and materials published through traditional channels.