We’ve talked before in previous posts about the great potential upside of Exchange-Traded Funds (ETFs) Remember, at Firstrade, all of our 2,300 ETFs are commission free and we make it easier to select the right ones for you.

In the current market, ETFs — baskets of stocks, bonds or commodities — have become increasingly valuable investment tools for self-directed investors seeking greater portfolio diversification, reduced risk, increased flexibility and tax efficiency through exchange-traded investing. Investors can choose from a wide array of funds in virtually any sector, industry or asset class.

A particular segment of the ETF market includes so-called “socially responsible” ETFs, which are becoming increasingly popular with investors interested in combining a sound investment strategy while supporting funds that adhere to social, moral or environmental standards, among others. A socially responsible ETF generally will track ethically sound companies, such as those adhering to only the highest standards of corporate governance and citizenship.

Many of these ETFs are an excellent way to invest around themes. For instance, funds may track companies that seek to advance the role of women through gender diversity or those that emphasize the protection of the planet through a commitment to reducing their carbon footprints. Additional examples of socially responsible ETFs include those tracking companies with proven reputations for supporting social causes and giving back to their communities.

What you will surely not find in any socially responsible ETFs are “sin stocks” including those in gambling, tobacco, alcohol and gun industries that socially responsible investors believe are “bad” for society.

So, if you’re interested in socially responsible ETFs, do your homework to learn about socially responsible investing. Think about your values, and the kind of causes or social programs you would want to support. But keep in mind that you are still investing your hard-earned money so pay attention, do your research and be sure to think about diversification in your investing strategy as well.

Regardless of how you chose to invest, remember that Firstrade customers have access to more than 2,300 ETFs, including several of the leading socially responsible ETFs.

The U.S. ETF industry recently hit a milestone, recording nearly $4 trillion in assets, according to data on ETF.com. ETFs are widely expected to continue their growth in popularity, making Firstrade’s no-cost trading even more attractive and timely for investors.

Want to choose the right ETF for you? Check out our thousands of free ETFs, and start commision-free trading here.