As you know, the market is in turmoil today. At this moment, 11:45 am, the S&P is down 2.3%, 45 points. But, premarket, it was down 100 points.
Now, premarket, I heard Jim Cramer say, "today is not the day to use market orders." Yes, on Mad Money, he seems a bit eccentric, but he does offer some wise advice at times.
In my opinion, your stock had some people that did just that. A market order. And, regardless of the fundamentals of this company, buyers had no orders to buy. Except a couple wise guys (in both senses) that put in buys at crazy prices. And they filled.
With an Apple, trading around $100, the book probably has millions of shares on order with a buy at $80 or higher. Just an example. I'd bet there were a number of stocks that had the profile of yours, i.e. a chart reflecting trades similar to a flash crash. There are some traders smiling ear to ear, and some crying in their beer.
(Note - I use the phrase "in my opinion." This is the only explanation I can imagine. Occam's Razor.)