Data vendor Thomson Reuters has resolved the fault affecting the bid/ask quotes that are delivered to its terminals by the London Stock Exchange (LSE).
“Thomson Reuters implemented a fix to the LSE bid/ask issue and it has been running live from market open today,” read a statement from the data vendor.
Other data vendors that were impacted included SIX Telekurs and Interactive Data. A spokesperson for SIX Telekurs said it had identified the root of the problem and was “very close” to implementing a solution but declined to give any further information, while Interactive Data said it hoped to resolve the issue shortly.
The effect of the fault was that bid and ask data disseminated using the FIX protocol was intermittently being displayed with zeros. Because of the broad scope of the issue, neither data vendors nor the LSE were able to confirm how many instruments were affected. The issue is not thought to affect those that deliver data using the ITCH protocol, such as Fidessa or Bloomberg.
The LSE said it was working with the affected vendors, but it is unclear whether the issue stems from a technical issue relating to the exchange's migration to its new Millennium Exchange trading platform on 14 February, or the failure of data vendors to adjust to the new system.
While the LSE said some vendors were “unable to ensure that their systems are ready to align to the new Millennium Exchange platform”, Thomson Reuters suggested that the problem was at the exchange's end, saying in a statement yesterday that “the London Stock Exchange team is currently working to introduce a permanent fix”.