Ok so here is what happend today. I was watching the price for an option that I was interested in. The ask price was like 0,29 or something with volume 40, then all of a sudden the last price quote jumps to 1,92 and volume 1. So how is it possible someone bought 1 at 1,92 if there were 40 availabe for 0,29. The ask price stayed the same and i couldnt see any change in volume.