LK plummeted this morning on news of potential fabrication of transactions spanning the second to fourth quarters of 2019. The drop was from roughly $26 a share, and plummeted to roughly $4 per share. Shortly after open the chart began a massive climb up.
I presume this is due to short sales closing positions, and dip buyers coming in to snatch up shares.
I'm not sure how much longer this will go on for, and halts are frequent.