For most brokers, GTC orders get commissioned every day as long as their is a partial fill that day. I'm sure they'll blind eye this issue. But, I will certainly call tomorrow and listen to 20 minutes of BS :) BTW - I've also been getting 1 share fills, on both sides, while bid or ask sitting on a huge pile. This is out of the range of odd lot reporting. Commission mining is the only thing that comes to mind.