| Abbreviation | Definition |
|---|---|
| MBBC | Monterey Bay Bancorp, Inc. |
| MBCI | Mercantile Trust & Savings Bank of Illinois |
| MBFC | Megabank Financial Corporation |
| MBFHF | M B F Holdings Berhad |
| MBFHY | M B F Holdings, Inc. |
| MBFI | M B Financial, Inc. |
| MBHC | Mortgage Bankers Holding Company |
| MBHI | Midwest Banc Holdings, Inc. |
| MBIO | Molecular Biosystems, Inc. |
| MBKL | Metairie Bank & Tust Company of Louisiana |
| MBKT | Monroe Bank & Trust Company of Michigan |
| MBLA | National Mercantile Bancorp |
| MBLAD | National Mercantile Bancorp |
| MBLAP | National Mercantile Bancorp Preferred |
| MBLMQ | MobileMedia Corporation (in bankruptcy) |
| MBLQE | MobileMedia Corporation |
| MBNK | Main Street Bancorp, Inc. |
| MBNY | Merchants New York Bancorp, Inc. |
| MBRS | Memberworks, Inc. |
| MBRUY | Menatep Bank |