Invesco Van Kampen Muni Tr $4,739 Invesco Van Kampen Muni Op $15,603 Invesco Van Kampen Advanta $6,110 Invesco Van Kampen Tr For $2,453 Invesco Van Kampen Muni Tr $4,739 Invesco Van Kampen Muni Op $15,603 Invesco Van Kampen Advanta $6,110 Invesco Van Kampen Tr For $2,453