The 3D Printing ETF (BATS: PRNT ) is a doorway for investors to get exposure to a niche (but potentially mainstream) subsegment of the manufacturing industry. Let's look at this still relatively small $77 million AUM fund advised by ARKI have been a keen student of the markets for several years now. I love studying how companies grow over time, what value they deliver to their stakeholders, and projecting long-term value as an investment opportunity. I work as a content professional for a software company, ...