An Oil ETF is an exchange-traded fund that invests in companies involved in the oil and gas industry. It may include a variety of different types of businesses, such as those engaged in discovery, production, distribution and retail activities related to the commodity itself. Additionally, some oil ETFs are structured as commodity pools with limited partnership interests instead of shares; these pools invest primarily in derivative contracts like futures and options.The main advantage to investing through an oil ETF is its diversification benefits; investors can gain exposure to a wide range of stocks within the sector without having to purchase each one individually or build their own portfolio from scratch. This type of investment also provides access to specialized strategies not available through traditional mutual funds or individual stock purchases – for example, certain commodities may be tracked by leveraged investments which provide higher returns than non-leveraged products but also come with greater risk levels. Additionally due their structure as passively managed funds they tend have lower fees than actively managed ones making them more attractive choices for long term investors looking for cost savings over time while still gaining market exposure .Overall investing via an Oil Exchange Traded Fund offers many advantages when compared against buying individual stocks or building your own portfolio from scratch; however it’s important that potential investors understand all risks associated before committing capital into any particular product so they can make informed decisions about what best meets their needs given current market conditions at any given point time.