I interviewed on 12-19 and they said around half have been filled. I just put my deposit for a seat last week and I assumed a few others have also. I would say maybe 40-50 seats have been filled by now? Although, you have to factor in the fact that SUNY has 100% refundable fee which means a few people may withdraw from their seats if they get in elsewhere. I know I might do that if I really like PCO. So don't worry!