Foreign markets and international-focused stocks and exchange traded funds (ETFs) have displayed exceptional growth and gained popularity over the past couple years. The foreign markets may not outperform U.S. market forever, but they are worth your consideration and time in research, says Todd Wenning for The Motley Fool.

For the sixth consecutive year, the Vanguard Total International Stock Market Index outpaced the Vanguard Total Stock Market Index.

As for ETFs, it’s been the year of steel, as Market Vectors Steel (SLX) is up 62% from last February. Individual steel producers are up also: CVRD (RIO) and Rio Tinto (RTP) both have gained 85% for the period.

We’ve also been hearing a slew of news from both the agriculture and metals and mining sectors. Just when you think they’ve gone as high as they can, they take it a step further.

PowerShares DB Agriculture (DBA) is up 22.1% year-to-date. Gold and silver-focused ETFs such as streetTRACKS Gold Shares (GLD) and iShares Silver Trust (SLV) are up an average of 13.1%.

Can it continue? What do you think?

The opinions and forecasts expressed herein are solely those of Tom Lydon, and may not actually come to pass. Information on this site should not be used or construed as an offer to sell, a solicitation of an offer to buy, or a recommendation for any product.