This ETF offers investors exposure to preferred stock, an interesting segment of the capital markets that most investors do not have a lot of exposure to. Preferred stock holders have a 'preferred' position on assets compared to other common shareholders should there be a liquidity event in the company. However, these shareholders generally do not have voting rights in exchange for this premium position. Preferred stock also generally pay out solid dividend yields but then also do not participate as much in equity appreciation as their common share counterparts. Due to this preferred stock could be appropriate for those seeking to boost yields in a portfolio or for those looking for less risky forms of equity exposure that are relatively absent from broad portfolios of stocks. PGF isn't very diversified even by the lower standards of this Category. The fund holds just 30 securities in total and all of them are in the financial sector suggesting this is a concentrated bet on the banking industry. As a result, investors should consider this holding a part of the financials allocation of a portfolio and only used in small amounts to boost yields. If used properly, PGF could be a powerful tool for investors, just be careful and make sure to not overinvest in the sector.