Group 1 - The Pacer US Cash Cows 100 ETF (BATS: COWZ) focuses on companies' free cash flow rather than traditional metrics like price-to-earnings [1] - This investment strategy results in a portfolio characterized by very low valuations [1] Group 2 - The article does not provide specific investment recommendations or advice regarding suitability for individual investors [2] - It emphasizes that past performance does not guarantee future results [2]