If you're interested in broad exposure to the Healthcare - Biotech segment of the equity market, look no further than the Invesco Dynamic Biotechnology & Genome ETF (PBE), a passively managed exchange traded fund launched on 06/23/2005.An increasingly popular option among retail and institutional investors, passively managed ETFs offer low costs, transparency, flexibility, and tax efficiency; they are also excellent vehicles for long term investors.Investor-friendly, sector ETFs provide many options to gain low risk and diversified exposure to a broad group of companies in particular sectors. Healthcare - Biotech is one of the 16 broad Zacks sectors within the Zacks Industry classification. It is currently ranked 2, placing it in top 13%.Index DetailsThe fund is sponsored by Invesco. It has amassed assets over $275.95 M, making it one of the average sized ETFs attempting to match the performance of the Healthcare - Biotech segment of the equity market. PBE seeks to match the performance of the Dynamic Biotechnology & Genome Intellidex Index before fees and expenses.This is comprised of stocks of 30 U.S. biotechnology and genome companies. These are companies that are principally engaged in the research, development, manufacture and marketing and distribution of various biotechnological products, services and processes and companies that benefit significantly from scientific and technological advances in biotechnology and genetic engineering and research.CostsSince cheaper funds tend to produce better results than more expensive funds, assuming all other factors remain equal, it is important for investors to pay attention to an ETF's expense ratio.Annual operating expenses for this ETF are 0.59%, making it one of the more expensive products in the space.Sector Exposure and Top HoldingsEven though ETFs offer diversified exposure that minimizes single stock risk, investors should also look at the actual holdings inside the fund. Luckily, most ETFs are very transparent products that disclose their holdings on a daily basis.This ETF has heaviest allocation in the Healthcare sector--about 100% of the portfolio.Looking at individual holdings, Amgen Inc (AMGN) accounts for about 5.71% of total assets, followed by Vertex Pharmaceuticals Inc (VRTX) and Biogen Inc (BIIB).The top 10 holdings account for about 49.06% of total assets under management.Performance and RiskThe ETF has gained about 5.43% so far this year and it's up approximately 11.01% in the last one year (as of 11/21/2018). In that past 52-week period, it has traded between $44.73 and $60.27.The ETF has a beta of 1.46 and standard deviation of 26.23% for the trailing three-year period, making it a high risk choice in the space. With about 30 holdings, it has more concentrated exposure than peers.AlternativesInvesco Dynamic Biotechnology & Genome ETF holds a Zacks ETF Rank of 2 (Buy), which is based on expected asset class return, expense ratio, and momentum, among other factors. Because of this, PBE is an excellent option for investors seeking exposure to the Health Care ETFs segment of the market. There are other additional ETFs in the space that investors could consider as well.SPDR S&P Biotech ETF (XBI) tracks S&P Biotechnology Select Industry Index and the iShares Nasdaq Biotechnology ETF (IBB) tracks Nasdaq Biotechnology Index. SPDR S&P Biotech ETF has $4.25 B in assets, iShares Nasdaq Biotechnology ETF has $7.96 B. XBI has an expense ratio of 0.35% and IBB charges 0.47%.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 PWRSH-DYN BIO (PBE): ETF Research Reports ISHARES NDQ BIO (IBB): ETF Research Reports SPDR-SP BIOTECH (XBI): ETF Research Reports Biogen Inc. (BIIB): Free Stock Analysis Report Vertex Pharmaceuticals Incorporated (VRTX): Free Stock Analysis Report Amgen Inc. (AMGN): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research