The 3D Printing ETF (PRNT) seeks to provide investment results that closely correspond, before fees and expenses, to the performance of the Total 3D-Printing Index, which is designed to track the price movements of stocks of companies involved in the 3D printing industry. The companies in the Total 3-D Printing Index are worldwide leaders in 3D printing and related businesses such as Computer-Aided Design and simulation software, service centers, scanning and measurements, and materials.