| WDC | Western Digital Corp. | 34.51 | Stock | Data Storage Devices | NYQ |
| WDC.AX | Westfield Group | 9.07 | Stock | Property Management | ASX |
| WDC.SG | WESTERN DIGITAL | 30.80 | Stock | Data Storage Devices | STU |
| WDCX12.CME | Housing (CSIs) Washington D.C. | 183.80 | Future | | CME |
| WDC.MX | WESTERN DIGITAL | 478.20 | Stock | | MEX |
| WDCX16.CME | Housing (CSIs) Washington D.C. | 201.40 | Future | | CME |
| WDCG12.CME | Housing (CSIs) Washington D.C. | 181.00 | Future | | CME |
| WDCX14.CME | Housing (CSIs) Washington D.C. | 0.00 | Future | | CME |
| WDC.F | WESTERN DIGITAL | 26.95 | Stock | Data Storage Devices | FRA |
| WDC.MU | WESTERN DIGITAL | 26.43 | Stock | Data Storage Devices | MUN |
| WDCK13.CME | Housing (CSIs) Washington D.C. | 0.00 | Future | | CME |
| WDCQ12.CME | Housing (CSIs) Washington D.C. | 181.20 | Future | | CME |
| WDCX13.CME | Housing (CSIs) Washington D.C. | 188.60 | Future | | CME |
| WDC.DU | WESTERN DIGITAL | 27.76 | Stock | Data Storage Devices | DUS |
| WDCX11.CME | future for WDC, November, 2011, | 184.00 | Future | | CME |
| WDCG13.CME | Housing (CSIs) Washington D.C. | 184.00 | Future | | CME |
| WDCX15.CME | Housing (CSIs) Washington D.C. | 0.00 | Future | | CME |
| WDCK12.CME | Housing (CSIs) Washington D.C. | 176.40 | Future | | CME |
| WDC.BE | WESTERN DIGITAL | 30.27 | Stock | Data Storage Devices | BER |
| WDCK14.CME | Housing (CSIs) Washington D.C. | 0.00 | Future | | CME |