How can I keep my wood floors from smudges, even after cleaning?

Since the floor is new, I'd check with the company that made the flooring if it came pre-finished or with the company that finished if it didn't come pre-finished. Over the years I've had wood floors that were finished with both satin and glossy finishes and I've never had a noticeable smudging problem especially from people walking on the floor in socks. The only time I can recall *any* smudging was many years ago from a waxing that wasn't applied properly and therefore couldn't be buffed properly. Stripping and reapplication did the trick. (That was back when waxing of wood floors was commonly done.) While smudges can be more noticeable with certain lighting conditions, and some of us might be less likely to notice them depending on our personal tolerance and our room layouts/angle if lighting, it sure sounds like to me there is a problem with the finish coat and NOT because it's satin and not glossy. Good luck!