Value exchange-traded funds, or ETFs, offer investors diversified exposure to cheaply valued stocks. Three of these have particularly strong returns, strategies, and fundamentals. The Pacer US Cash Cows 100 ETF (COWZ) which focuses on U.S. companies with particularly strong free cash flow, or FCF, yields. COWZ's strategy is solid and has led to outperformance in the past. The Avantis US Small Cap Value ETF (AVUV), which focuses on cheaply valued U.S. small-caps. AVUV has outperformed in the past too, as have most other Avantis value ETFs.