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| Index Weights |
| As Of: 24-Jul-2008 |
| Light Crude | 22-Jun-2009 | 37.12 |
| Heating Oil | 29-May-2009 | 23.32 |
| Corn | 12-Dec-2008 | 11.56 |
| Gold | 29-Oct-2008 | 8.07 |
| Aluminium | 19-Nov-2008 | 10.28 |
| Wheat | 14-Jul-2009 | 9.64 |
Change to Follow the Optimum Yield™ version of the Deutsche Bank Liquid Commodity IndexTM - Excess Return
On June 1, 2006, the PowerShares DB Commodity Index Tracking Fund ("DBC") began to seek to track the performance of the Optimum Yield™ ("OY") version of the Deutsche Bank Liquid Commodity IndexTM - Excess Return ("DBLCI-ER"). The OY version of the DBLCI-ER provides a rules-based formula for replacing an expiring futures contract with a new futures contract having an expiration date that generates the highest "implied roll yield."
Please go to https://index.db.com – Traded Index Products – Commodities – DBLCI for a thorough description of the Optimum YieldTM contract selection formula.
A patent application concerning the Optimum YieldTM process is pending at the United States Patent and Trademark Office.
As of June 12, 2006, DBLCIX, the ticker symbol for the intra-day indicative level of the DBLCI, displays data for the OY version of the DBLCI-ER rather than the non-OY version of the DBLCI-ER. The historical DBLCI-ER data was normalized to have a level of 488.6960 on June 8, 2006, the closing level of the OY version of the DBLCI-ER as of that date.
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