London Stock Exchange Says Software to Blame for Trading Delay

  • Markets operator started trading again at 9 a.m. U.K. time
  • Comes after opening auction was delayed earlier Thursday

London Stock Exchange.

Photographer: Luke MacGregor/Bloomberg
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The London Stock Exchange Group Plc said a software issue was to blame for a one-hour delay to its opening auction on Thursday, the first major outage of its kind in seven years.

Regular trading on LSE commenced at 9:00 a.m. U.K. time after the opening auction was postponed due to a “technical software issue” that has been resolved, the exchange said. The 217-year-old bourse operates one of Europe’s largest cash equity markets. LSE’s main equity market and Alternative Investment Market were among those affected.