A smart beta exchange traded fund, the Global X SuperDividend U.S. ETF (DIV) debuted on 03/11/2013, and offers broad exposure to the Total Market (U.S.) ETFs category of the market.What Are Smart Beta ETFs?The ETF industry has long been dominated by products based on market cap weighted indexes, a strategy created to reflect the market or a particular market segment.Investors who believe in market efficiency should consider market cap indexes, as they replicate market returns in a low-cost, convenient, and transparent way.There are some investors, though, who think it's possible to beat the market with great stock selection; this group likely invests in another class of funds known as smart beta, which track non-cap weighted strategies.These indexes attempt to select stocks that have better chances of risk-return performance, based on certain fundamental characteristics or a combination of such characteristics.Even though this space provides many choices to investors--think one of the simplest methodologies like equal-weighting and more complicated ones like fundamental and volatility/momentum based weighting--not all have been able to deliver first-rate results.Fund Sponsor & IndexThe fund is sponsored by Global X Management. It has amassed assets over $418.61 M, making it one of the larger ETFs in the Total Market (U.S.) ETFs. This particular fund seeks to match the performance of the INDXX SuperDividend U.S. Low Volatility Index before fees and expenses.The INDXX SuperDividend US Low Volatility Index tracks the performance of 50 equally weighted common stocks, MLPs & REITs that rank among the highest dividend yielding equity securities in the US.Cost & Other ExpensesInvestors should also pay attention to an ETF's expense ratio. Lower cost products will produce better results than those with a higher cost, assuming all other metrics remain the same.With on par with most peer products in the space, this ETF has annual operating expenses of 0.45%.It's 12-month trailing dividend yield comes in at 6.38%.Sector Exposure and Top HoldingsMost ETFs are very transparent products, and disclose their holdings on a daily basis. ETFs also offer diversified exposure, which minimizes single stock risk, though it's still important for investors to research a fund's holdings.When you look at individual holdings, Annaly Capital Management accounts for about 3.24% of the fund's total assets, followed by Brinker International Inc and Universal Corp/va.The top 10 holdings account for about 26.15% of total assets under management.Performance and RiskYear-to-date, the Global X SuperDividend U.S. ETF has gained about 0.76% so far, and is up about 1.87% over the last 12 months (as of 12/03/2018). DIV has traded between $23.53 and $25.83 in this past 52-week period.The ETF has a beta of 0.50 and standard deviation of 9.91% for the trailing three-year period, making it a medium risk choice in the space. With about 49 holdings, it has more concentrated exposure than peers.AlternativesGlobal X SuperDividend U.S. ETF is a reasonable option for investors seeking to outperform the Total Market (U.S.) ETFs segment of the market. However, there are other ETFs in the space which investors could consider.WBI Power Factor High Dividend ETF (WBIY) tracks Solactive Power Factor High Dividend Index and the Global X SuperDividend ETF (SDIV) tracks Solactive Global SuperDividend Index. WBI Power Factor High Dividend ETF has $137.10 M in assets, Global X SuperDividend ETF has $919.20 M. WBIY has an expense ratio of 0.70% and SDIV charges 0.58%.Investors looking for cheaper and lower-risk options should consider traditional market cap weighted ETFs that aim to match the returns of the Total Market (U.S.) ETFs.Bottom LineTo learn more about this product and other ETFs, screen for products that match your investment objectives and read articles on latest developments in the ETF investing universe, please visit Zacks ETF Center.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report GLBL-X SPRDV US (DIV): ETF Research Reports GLBL-X SUPERDIV (SDIV): ETF Research Reports WBI-PWR FAC HD (WBIY): ETF Research Reports To read this article on Zacks.com click here. Zacks Investment Research