I'm not sure this is in the right forum but I believe it's at least tangentially related. I'm looking at JUN 21 TSLA puts at a strike of 95. There was volume today of 574 and I can see on IB that the last trade was at 3:53 EDT for 100 contracts. However, the bid is blank. Why is that? And secondly, if I were to put a bid for 10 contracts for 0.01 I'm assuming a trade would happen quickly as the ask is 0.01--how long would my bid remain listed after the trade, provided there are no other bidders after me? Please note, I have zero desire to make this trade, I'm just trying to understand the mechanics of what I'm seeing on the screen. Thank you.