Back in early September I bet this dude (DanCS) on Seeking Alpha that TSLA would be up big by December.
He was so confident I was wrong (citing all kinds of car sales figures, VAG group plans etc) that he took out short positions on TSLA - that was back when TSLA was $407.
Today TSLA is $574
Can you imagine the financial beating? It's why options are so dangerous: unlimited loss potential vs equity where losses stop at zero.