The Benchmark Regulation seeks to ensure the reliability and continued accuracy of the various benchmarks. There are circumstances, however, in which the integrity and accuracy of the benchmarks could be compromised by errors or inaccuracies in the index calculation process.
This policy should be read in conjunction with the Commerzbank Policy for Independent Calculation and Publication and the Commerzbank Benchmark Statement. This policy describes the procedure for identification, escalation and treatment of any index calculation errors.
2 Scope
Commerzbank makes every effort to maintain its indices to high standards. Nevertheless, errors may arise in the index and constituent data from time to time. Such errors may arise as a result of several events, such as pricing errors, external disruptions or market distortions, incorrect, incomplete or late input data, and incorrect application of index criteria.
Where error is identified, Commerzbank will follow the procedure and the guidelines set out below. The error may be identified by Commerzbank itself or by an external user.
3 Procedure
During the process of administration of Commerzbank’s indices, several types of errors may occur, including, but not limited to:
When an error or a potential error is identified, the event should be appropriately escalated and investigated. An investigation may result in either of the below treatments:
(a) historical restatement of index levels, or,
(b) only a correction of index levels going forward, or,
(c) no restatement or correction
Commerzbank aims to follow a rules based procedure to determine the treatment. This is detailed further in the next section; the treatment depends on the nature and age of the error.
From time to time, Commerzbank may deviate from the standard treatment of errors. This may only be done with prior authorisation and upon the exercise of expert judgement by the Index Committee. The Index Committee is a group of Commerzbank employees, which represents legal, compliance, IT, market risk and front office functions.
4 List of Errors and Treatments
Error Type | Restatement | Correction | Timing | Implementation | |
Temporal Scope | retroactive |
going forward |
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Corporate Actions |
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noticed on effective date |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing and no longer than 20 index business days ago |
The index business day following the Announcement |
Error is corrected and/or restated using current input data. |
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noticed after effective date |
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Dividends |
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wrong amount |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing and no longer than 20 index business days ago |
The index business day following the Announcement |
Error is corrected and/or restated using current input data. |
|
wrong currency |
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dividend missed |
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Selections |
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Wrong constituent |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing. |
The index business day following the Announcement |
Selection is corrected and/or restated based on the input data of the time when the error occurred. Weighting is implemented using current input data. |
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wrong weighting method |
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wrong treatment |
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missed delisting |
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Calculation Parameter |
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Prices / NAVs |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing and no longer than 20 index business days ago |
immediately |
Error is corrected and/or restated using current input data. |
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Accrued interests |
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Fx rates |
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Holiday Calendar |
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Tax Rates |
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wrong tax rates |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing and no longer than 20 index business days ago |
immediately |
Error is corrected and/or restated using current input data. |
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Fees |
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wrong management fees / synthetic dividend yields |
Yes, if error occurred within the last 5 index business days. |
Yes, always. |
immediately |
Error is corrected using current input data. |
|
wrong rebalancing fees |
Yes, if error occurred within the last 5 index business days |
Yes, if error occurred after the last rebalancing and no longer than 20 index business days ago |
immediately |
Error is corrected and/or restated using current input data. |
|
Model Error |
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Wrong calculation formula in the Index definitions |
Yes, if error occurred within the last 5 index business days. |
Yes, always. |
immediately |
N/A |
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5 Unexpected Error Types
During the process of calculating indices, unexpected or unpredicted error types may occur. If such an error type is materially similar to another type identified in the previous section, then the treatment shall be the same. Otherwise, such an error type shall be escalated to the Index Committee and any mitigating action may only be taken with prior authorisation and upon the exercise of expert judgement by the Index Committee.
6 Documentation and Audit Trail
Any error and its individual correction are reviewed on several levels.
The investigation of any error can be carried out by the team responsible for index calculation (IT team) or any other relevant employee from the front office functions. The results of the investigation are then double-checked and approved by a completely independent team (Market Risk: Model Validation team), which sits outside of the front office functions and has broad oversight responsibilities. Upon agreement between different teams, the error and any corrective action is documented and stored for future reference by the Index Committee.
7 Accountability
The policy shall be reviewed regularly and updated accordingly.
Please note that Commerzbank has reached an agreement to sell its Equity Markets & Commodities business, which includes the issuance and trading of investment and leverage products as well as the administration of indices, to Société Générale S.A. As part of the transaction Commerzbank envisages the discontinuance of its administration role in respect of indices within the next few years.