DTF Tax Free Income Inc $11,030 Duff & Phelps Utility & Corporate Bond Trust Inc $10,620 DNP Select Income Fund Inc $71,981 Duff & Phelps Global Utility Income Fund Inc. $9,790 DTF Tax Free Income Inc $11,030 Duff & Phelps Utility & Corporate Bond Trust Inc $10,620 DNP Select Income Fund Inc $71,981 Duff & Phelps Global Utility Income Fund Inc. $9,790