On 27 September 2018, the European Securities and Markets Authority (ESMA) published a press release announcing details of new data completeness indicators for trading venues due to be published detailing the delivery of double volume cap (DVC) and bond liquidity data. These will be:
- the completeness ratio; and
- the Completeness Shortfall.
The completeness ratio is an indicator that provides information on the completeness of a particular venue taken in isolation, irrespective of the performance of other venues. The completeness ratio is calculated as the number of records received from a venue divided by the total number of records expected from that venue over the relevant period. One record corresponds to a bi-weekly report in the case of completeness for the DVC and to a one-day report in the case of completeness for bond liquidity.
The completeness shortfall is a measure that gives an indication of a venue’s performance in terms of completeness compared to other trading venues. It reflects the percentage of missing data for which a particular venue is responsible.
The indicators will be published for the first time on 8 October 2018 for DVC data and then on a monthly basis. The completeness indicators will be published on 1 November 2018 for bond liquidity and then on a quarterly basis. The formula for calculating the indicators are included in the press release.