wow...which exchange is this?
It was on BitStamp, looks like the trade has been taken off the chart now. Glad I grabbed a screenshot of it.
Why has Bitstamp removed this from their charts? Whales triggering stop loss orders is just normal trading behavior and not fraudulent at all. Maybe that it is done from a hacked Bitstamp account? I can't think of something else why Bitstamp removed it other than that as reason.
A glitch in the reporting, perhaps? It has happened a few other times in the past with other exchanges. If it was a glitch, it was rightfully removed.
I for one never use stop-loss orders. Bitcoin is far from being liquid enough to trust that a market order pushed through at or below said trigger price would be an acceptable means to limit losses.