| Abbreviation | Definition |
|---|---|
| DSU | Debt Strategies Fund II, Inc. |
| DSW | Southwestern Bell Telephone Company |
| DT | Deutsche Telekom, A. G. |
| DTA | Detroit Edison Company Class A |
| DTB | Detroit Edison Company Class B |
| DTC | Domtar, Inc. |
| DTE | DTE Energy Company (Detroit Edison) |
| DTF | Duff & Phelps Utilities Tax Free Fund |
| DTG | Dollar Thrifty Automotive Group |
| DTH | Detroit Edison Company Class H |
| DTL | Dal- Tile International, Inc. |
| DUC | Duff & Phelps Utility and Corporate Bond Fund |
| DUK | Duke Energy Corporation |
| DUKPA | Duke Energy Corporation Preferred A |
| DUKPQ | Duke Energy Corporation Capital Trust I |
| DUKPU | Duke Energy Corporation Capital Financing Trust II |
| DUKPV | Duke Energy Corporation Capital Trust II |
| DUKPW | Duke Energy Corporation Capital Financing Trust III |
| DUT | Duke Energy Corporation Tracking |
| DV | Devry, Inc. |