Looking for broad exposure to the Mid Cap Value segment of the US equity market? You should consider the WisdomTree U.S. MidCap Dividend ETF (DON), a passively managed exchange traded fund launched on 06/16/2006.The fund is sponsored by Wisdomtree. It has amassed assets over $3.13 billion, making it one of the larger ETFs attempting to match the Mid Cap Value segment of the US equity market.Why Mid Cap ValueWith market capitalization between $2 billion and $10 billion, mid cap companies usually contain higher growth prospects than large cap companies, and are considered less risky than their small cap counterparts. Thus they have a nice balance of growth potential and stability.Carrying lower than average price-to-earnings and price-to-book ratios, value stocks also have lower than average sales and earnings growth rates. When you look at long-term performance, value stocks have outperformed growth stocks in nearly all markets. But in strong bull markets, growth stocks are more likely to be winners.CostsWhen considering an ETF's total return, expense ratios are an important factor, and cheaper funds can significantly outperform their more expensive counterparts in the long term if all other factors remain equal.Annual operating expenses for this ETF are 0.38%, putting it on par with most peer products in the space.It has a 12-month trailing dividend yield of 2.13%.Sector Exposure and Top HoldingsEven though ETFs offer diversified exposure which minimizes single stock risk, it is still important to look into a fund's holdings before investing. Luckily, most ETFs are very transparent products that disclose their holdings on a daily basis.This ETF has heaviest allocation to the Financials sector--about 26% of the portfolio. Industrials and Utilities round out the top three.Looking at individual holdings, Antero Midstream Corp (AM) accounts for about 1.82% of total assets, followed by Interpublic Group Of Cos Inc (IPG) and Franklin Resources Inc (BEN).The top 10 holdings account for about 11.87% of total assets under management.Performance and RiskDON seeks to match the performance of the WisdomTree U.S. MidCap Dividend Index before fees and expenses. The WisdomTree U.S. MidCap Dividend Index is a fundamentally weighted index that measures the performance of the mid-capitalization segment of the US dividend-paying market.The ETF has added about 30.93% so far this year and is up roughly 29.57% in the last one year (as of 12/28/2021). In the past 52-week period, it has traded between $34.36 and $45.13.The ETF has a beta of 1.15 and standard deviation of 27.83% for the trailing three-year period, making it a medium risk choice in the space. With about 303 holdings, it effectively diversifies company-specific risk.AlternativesWisdomTree U.S. MidCap Dividend ETF carries a Zacks ETF Rank of 3 (Hold), which is based on expected asset class return, expense ratio, and momentum, among other factors. Thus, DON is a good option for those seeking exposure to the Style Box - Mid Cap Value area of the market. Investors might also want to consider some other ETF options in the space.The iShares Russell MidCap Value ETF (IWS) and the Vanguard MidCap Value ETF (VOE) track a similar index. While iShares Russell MidCap Value ETF has $15.31 billion in assets, Vanguard MidCap Value ETF has $15.68 billion. IWS has an expense ratio of 0.23% and VOE charges 0.07%.Bottom-LinePassively managed ETFs are becoming increasingly popular with institutional as well as retail investors due to their low cost, transparency, flexibility and tax efficiency. They are excellent vehicles for long term investors.To 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. Infrastructure Stock Boom to Sweep America A massive push to rebuild the crumbling U.S. infrastructure will soon be underway. It’s bipartisan, urgent, and inevitable. Trillions will be spent. Fortunes will be made. The only question is “Will you get into the right stocks early when their growth potential is greatest?” Zacks has released a Special Report to help you do just that, and today it’s free. Discover 7 special companies that look to gain the most from construction and repair to roads, bridges, and buildings, plus cargo hauling and energy transformation on an almost unimaginable scale.Download FREE: How to Profit from Trillions on Spending for Infrastructure >>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 WisdomTree U.S. MidCap Dividend ETF (DON): ETF Research Reports Franklin Resources, Inc. (BEN): Free Stock Analysis Report Interpublic Group of Companies, Inc. The (IPG): Free Stock Analysis Report Antero Midstream Corporation (AM): Free Stock Analysis Report Vanguard MidCap Value ETF (VOE): ETF Research Reports iShares Russell MidCap Value ETF (IWS): ETF Research Reports To read this article on Zacks.com click here.