The options expire Friday at 4PM (ET) (actually Saturday). The closing price on Friday determines whether an option is ITM or OTM. Whether there is any trading on Friday is irrelevant. The closing price at Friday close is what it is. If you are worried roll your contracts out and, perhaps, up. I would not worry about a trading halt. Good Luck! BUY! BABY BUY!! TO THE MOON AND BEYOND!!!
I don't know how your shorting this but I will tell you what I did and let me know what you think. I sold the jan. 12 $5 put for $.80 and used the money to buy the sept. $9 put for $.90. cost me $200 to short 2000 shares from $9 to $5. I did it that way because it was cheap and I believe the stock will recover in time and the jan. 12 option will exp.