Q: Can i be assigned if I buy-to-close a short position?
A: You will not be assigned because the Options Clearing Corporation processes closing buys before exercises. Hence, there can no assignment on positions that had been closed via buy-to-close orders placed within that day's trading hours. However, there exist a possibility that assignment had already taken place the day before but have not been communicated to you. To be 100% sure, check with your broker.