The 3D Printing ETF, managed by ARK Investment Management LLC, is a fund that focuses on the burgeoning 3D printing industry. It invests globally in companies involved in various aspects of 3D printing, including hardware, software, materials, and services. The ETF aims to mirror the performance of the Total 3D-Printing Index, capturing both growth and value stocks across a range of market capitalizations. Launched in 2016, it offers investors exposure to the innovative 3D printing sector.