(Corrects amount tracked in first paragraph.)

MSCI Inc. (MSCI), whose stock indexes are tracked by investors with about $7 trillion in assets, will release the results of its 2012 annual market classification review on June 20.

The decision will be announced shortly after 11 p.m. Central European Summer Time, MSCI said in a statement on its website. MSCI is reviewing South Korea and Taiwan for a potential reclassification to developed markets, and Qatar and the United Arab Emirates to emerging markets.

In December, the U.A.E. and Qatar failed for the second time in a year to secure an upgrade from frontier market status. South Korea and Taiwan failed to win the developed-market designation from MSCI in June last year.

To contact the reporter on this story: Zahra Hankir in Dubai at zhankir@bloomberg.net

To contact the editor responsible for this story: Claudia Maedler at cmaedler@bloomberg.net