Looking overseas, the iShares Core MSCI EAFE ETF (NYSEArca: IEFA) targets developed markets, and iShares Core MSCI Emerging Markets ETF (NYSEArca: IEMG) provides access to developing markets. IEFA has a 0.14% expense ratio and IEMG has a 0.18% expense ratio.

There are also options that income-minded investors may find attractive. Those who are seeking income generation can look at high-yield options in both stock and bond ETFs. The Vanguard REIT ETF (NYSEArca: VNQ), which holds real estate investment trusts, has a 2.7% 12-month yield. Bond investors can browse through speculative grade debt funds, like the SPDR Barclays High Yield Bond ETF (NYSEArca: JNK), which has a 4.6% 30-day SEC yield, and the actively managed AdvisorShares Peritus High Yield ETF (NYSEArca: HYLD), which shows a 7.74% 30-day SEC yield. In addition, iShares U.S. Preferred Stock ETF (NYSEArca: PFF), which act like a type of hybrid security, shows an attractive 6.5% 12-month yield.

As always, investors should do some due diligence of their own before jumping into any investment. There may be a number of ETFs that cover a similar market segment, so investors will have to dive deeper and understand how the varying products differ from one another.

For more information on ETFs, visit our ETF 101 category.

Max Chen contributed to this article.

Full disclosure: Tom Lydon’s clients onw shares of JNK, HYLD, IEMG, PFF.