Is First Trust Mid Cap Core AlphaDEX ETF (FNX) a Strong ETF Right Now?

The First Trust Mid Cap Core AlphaDEX ETF (FNX) is a smart beta mid-cap blend ETF with $1.37 billion in assets that has gained 13.43% year-to-date and 15.86% over the last 12 months. However, its 0.62% expense ratio is among the highest in its category, making it less competitive than cheaper alternatives like Vanguard Morningstar Mid-Cap ETF (0.03% expense ratio) and iShares Core S&P Mid-Cap ETF (0.05% expense ratio).