This ETF offers exposure to the U.S. financial sector, seeking to replicate an index that employs a unique strategy designed to generate excess returns relative to traditional cap-weighted benchmarks. The underlying AlphaDEX Index employs a quant-based screening methodology designed to identify stocks poised for outperformance. In return for exposure to this strategy, which has historically delivered impressive returns, investors can expect to pay a bit more; FXO's expense ratio is about 50 basis points higher than low cost options for financial exposure such as FFL and XLF. The unique index construction methodology has some other potential advantages; FXO maintains much lower concentration of top holdings than do cap-weighted funds such as XLF. That means that performance isn't as dependent on a handful of large cap stocks, potentially giving a better way to access financials. For those who believe in the merits of the AlphaDEX methodology and willing to pay a little extra for a shot at alpha, FXO might be worth a closer look.