Apple shares sent tumbling after trading glitch

The UK and US markets operator was the first exchange to go public in two years but its debut was overshadowed after it wrongly recorded a huge drop in Apple shares. At 10.57am New York time, a single trade of 100 shares in Apple was executed at $542.80, coming from the BATS Exchange. The previous transaction, seconds before, had been at $598.26 per share. This triggered a stock circuit breaker rule, stopping trading for five minutes.