Here is a performance review of US-based Verizon Communications(VZ) and Philippines-based Philippine Long Distance Telephone Company (PHI):

5-year return of Verizon Communications and Philippine Long Distance Telephone Company:

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10-year return of Verizon Communications and Philippine Long Distance Telephone Company:

In 5 years the difference in returns was not big.However in 10 years, PHI had an incredible run relative to the below average performance of Verizon.

Source: Google Finance

Disclosure: No Positions