| WBSN | Websense, Inc. | 24.80 | Stock | Business Services | NMS |
| WBMD | WebMD Health Corp. | 28.57 | Stock | Healthcare Information Services | NMS |
| WBK | Westpac Banking Corporation | 141.07 | Stock | Foreign Money Center Banks | NYQ |
| WBS | Webster Financial Corp. | 23.15 | Stock | Regional - Northeast Banks | NYQ |
| WBCO | Washington Banking Co. | 13.60 | Stock | Regional - Pacific Banks | NMS |
| WBKC | Wolverine Bancorp, Inc. | 18.65 | Stock | Money Center Banks | NCM |
| WBC | WABCO Holdings Inc. | 74.89 | Stock | Auto Parts | NYQ |
| WBC.AX | Westpac Banking Corporation | 29.32 | Stock | Money Center Banks | ASX |
| WBNK | Waccamaw Bankshares Inc. | 0.01 | Stock | Regional - Mid-Atlantic Banks | PNK |
| WBXU | Webxu, Inc. | 0.10 | Stock | | PNK |
| WBSIX | William Blair Small Cap Growth I | 30.54 | Mutual Fund | | NAS |
| WBRBY | Wienerberger AG | 2.39 | Stock | | PNK |
| WBPRZ | W Holding Co. Inc. | 0.01 | Stock | | PNK |
| WBIGX | William Blair International Growth N | 24.23 | Mutual Fund | | NAS |
| WBGGX | Wells Fargo Advantage WB Gr Allocation | 13.16 | Mutual Fund | | NAS |
| WBGAX | Wells Fargo Advantage WB Tactical Equity | 15.68 | Mutual Fund | | NAS |
| WBB | Westbury Bancorp, Inc. | 13.42 | Stock | Regional - Northeast Banks | NCM |
| WB.TO | WHISTLER BLACKCOMB HOLDINGS INC | 13.99 | Stock | | TOR |
| W01.SI | WBL Corporation Limited | 4.48 | Stock | Printed Circuit Boards | SES |
| WBMIX | Whitebox Tactical Opportunities Instl | 12.30 | Mutual Fund | | NAS |