The London Stock Exchange (LSE) extended its trading day by half an hour on Thursday afternoon because of a backlog of Level 2 data.
Trading ended at 17.00 after which the normal end of day auction was held.
A spokesperson from the LSE told theTRADEnews.com that the problem did not affect participants using Performance Channels – the LSE’s high-speed market data delivery service. Level 1 data was also unaffected.
Member firms were informed of the extension at around 16.30.
Any problem with the provision of Level 2 data potentially causes difficulties with establishing best execution. This is because an absence of Level 2 data prevents price comparison either side of the bid and offer.