I'm not sure this came up in the preceding 19 pages of posts. The unfortunate OP found that in the final hours of that fateful Friday, the call option he owned, there were no bidders. Certainly the right answer is to click the famous button on IB's TWS screen to prevent the exchange from automagically exercising your option, leaving you with half a million dollars worth of stock that you can't pay for, and leaving you hanging out in the wind until the market opens Monday. Anyway, my question, could he not have gone short and written for sale an offsetting call option to bring himself to neutral and lock himself into safety? Could he not have done this at 3PM on Friday and left the office early in complete safety? Is this completely safe? Or if the bid was NIL on unloading his long call would it also typically be NIL on shorting a second offsetting call? And more importantly, what are the micro-details of doing this? Maybe what would happen is he would get some small change for selling the call, but OCC would still exercise his first call on Saturday, and the Monday low opening, well writing the second call would be cold comfort since it only stays linear against the dropped opening price. So what about buying a put on Friday at 3PM? Maybe $800 was not enough, if they were even available.