| XERXUS31XXX | XEROX CORPORATION | |
| YAAMUS41XXX | YACKTMAN ASSET MANAGEMENT LP | |
| YMSEUS31XXX | YAMATANE SECURITIES (AMERICA) INC. | |
| YAPCUS51XXX | YATES PETROLEUM CORPORATION | |
| YECMUS31XXX | YEAGER CAPITAL MARKETS | |
| YOUNUS41XXX | YOUNG TRADING | |
| ZAALUS61XXX | ZAZOVE ASSOCIATES, LLC | |
| ZFNBUS55HOU | ZB, NA (FORMERLY ZIONS FIRST NATIONAL BANK) | |
| ZFNBUS55LAX | ZB, NA (FORMERLY ZIONS FIRST NATIONAL BANK) | |
| ZFNBUS55SLC | ZB, NA (FORMERLY ZIONS FIRST NATIONAL BANK) | |
| ZFNBUS55XXX | ZB, NA (FORMERLY ZIONS FIRST NATIONAL BANK) | |
| ZFNBUS55SEA | ZB, NA (FORMERLY ZIONS FIRST NATIONAL BANK) | |
| ZGIGUS61XXX | ZERO GRAVITY INTERNET GROUP, INC | |
| ZEVEUS61XXX | ZEVENBERGEN | |
| ZAMLUS31XXX | ZEVIN ASSET MANAGEMENT LLC | |
| ZCMLUS41XXX | ZIEGLER CAPITAL MANAGEMENT, LLC | |
| ZIWMUS41XXX | ZIEGLER WEALTH MANAGEMENT | |
| ZIINUS31XXX | ZIRKIN-CUTLER INVESTMENTS, A DIVISION OF UNITED CAPITAL FINANCIAL ADVISERS | |
| ZURIUS44FAR | ZURICH AMERICAN INSURANCE COMPANY | |
| ZURIUS44ZNA | ZURICH AMERICAN INSURANCE COMPANY | |
| ZURIUS44XXX | ZURICH AMERICAN INSURANCE COMPANY |