Список проголосовавших за комментарий "тут спорный момент, можно ли назвать багом алгоритм. Но в целом, программа действовала согласно исключениям. Там дальше Joe Ratterman объясняет что произошло. А “unique combination” of order types led to the problem moving from auction to trading.<br/> <br/> As a result, Mr Ratterman said, the software engines that match customer orders went into “failure status”, and were not able to update BATS’s quotes to the national market system’s consolidated tape.<br/> The markets then experienced a temporary locked condition, meaning that the market’s bid and offer prices were identical, as a result of stale quotes. “An execution then happened that put Apple into single-stock circuit breaker event,” said Mr Ratterman.<br/> "