| Abbreviation | Definition |
|---|---|
| MWD | Morgan Stanley Dean Witter |
| MWDPE | Morgan Stanley Dean Witter Preferred E |
| MWDPF | Morgan Stanley Dean Witter Preferred F |
| MWJ | MuniHoldings New Jersey Insured Fund |
| MWL | Mail-Well Holdings, Inc. |
| MWN | Morgan Stanley Dean Witter |
| MWT | McWhorter Technology, Inc. |
| MWY | Midway Games, Inc. |
| MX | Metso Corporation |
| MXE | Mexico Equity & Income Fund |
| MXF | Mexico Fund, Inc. |
| MXT | Metris Companies, Inc. |
| MYC | MuniYield California Fund, Inc. |
| MYD | MuniYield Fund, Inc. |
| MYE | Myers Industries, Inc. |
| MYF | MuniYield Florida Fund |
| MYG | Maytag Corporation |
| MYI | MuniYield Insured Fund, Inc. |
| MYJ | MuniYield New Jersey Fund, Inc. |
| MYK | Mykrolis Corporation |