British Airways owner loses £500m in value after IT meltdown

IAG shares plunge amid fears for airline’s reputation after IT failure stranded 75,000 passengers on busy holiday weekendHalf a billion pounds has been wiped off the market value of the British Airways owner, IAG, after computer system outages grounded hundreds of flights over the weekend.IAG shares fell more than 4% to 588p in London on Tuesday after the flight cancellations left 75,000 passengers stranded over the bank holiday weekend.Related: British Airways could face £100m compe