Auction System Glitch Led To LSE's Morning Blackout

London bourse's trading delay was the first such disruption in years.

London Stock Exchange

Trading began at 9 am local time, and the system has remained stable since then. The exchange’s operator, the London Stock Exchange Group (LSEG), cited a technical issue with its pre-open auction system as the cause of the delay.

“London Stock Exchange identified a technical software issue that was preventing some members from entering orders into the pre-open auction system prior to the standard market opening time of 8 am. To preserve the integrity of the market and to ensure orderly trading,

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