The ten most traded foreign ADR stocks by daily volume are:

Companhia Vale do Rio Doce-CVRD – RIO
Taiwan Semiconductor Manufacturing – TSM
Nokia – NOK
Petroleo Brasileiro – PBR
Itau Unibanco – ITU
Banco Bradesco – BBD
Alcatel-Lucent – ALU
Siliconware Precision Industries – SPIL
BP – BP
America Movil – AMX

Four of the above ten stocks are from Brazil.America Movil is from Mexico.