Investor Education Series: What are Stacker ETFs? Most of you would be familiar with what Exchange Traded Funds or ETFs for short are. I have written about ETFs on several occasions and highlighted which are some of the best ETFs to buy in this article: “Thematic ETFs partaking in the hottest trends” as well as this article: “Best Performing ETFs which consistently outperform the S&P 500 over the past decade”. In this article, I will be briefly highlighting a type of special ETFs that you probably are unaware of: Stacker ETFs. What exactly are they and is it something that you should consider having in your portfolio? Before that, a brief introduction on what are ETFs. What are ETFs An ETF is a type of security that involves a collection of securities, such as stocks that often tracks an underlying index although they can invest in any number of industry sectors or use various strategies....