DTF Tax Free Income Inc $10,997 Duff & Phelps Utility & Corporate Bond Trust Inc $10,620 DNP Select Income Fund Inc $71,981 Duff & Phelps Global Utility Income Fund Inc. $9,600 DTF Tax Free Income Inc $10,997 Duff & Phelps Utility & Corporate Bond Trust Inc $10,620 DNP Select Income Fund Inc $71,981 Duff & Phelps Global Utility Income Fund Inc. $9,600