The fund is a fund-of-fund that holds holds the Invesco Fundamental High Yield Corporate Bond ETF (ticker: PFB), as its portfolio. This will effectively give it the same exposure to high-yield corporate bonds rated at BB+ but not below B- by Moody's or S&P. The underlying ETF selects US-based publicly traded corporations that score positively in the index providers four fundamental factors: book value of assets, gross sales, gross dividends, and cash flow. There are two distinct maturity cells (15 years and 510 years) that the index employs, which allow up to two bonds per issuer. The issues are weighted proportionally to a companys RAFI score. The RAFI-patented fundamental weighting scheme normally results in overweighting of higher-quality bonds. The index is reconstituted monthly and rebalanced annually for new RAFI scores. It is important to note that performance of PFH and PFB may differ due to different fees, hedging strategies, and taxes.