Investors’ interest in emerging markets stocks is back. They may want to travel a bit farther to so-called frontier markets for even better returns, said Sandra Ackermann-Schaufler, portfolio manager for international and emerging markets for SEI Investments.

Frontier markets — those that haven’t yet achieved designation as emerging markets by MSCI Inc. — may grow even faster, she said.

First, here’s how the MSCI Emerging Markets Index – All MarketWatch News – Personal Finance