I think your question can easily be addressed if you tell on what exchange you opened that position. The fee structure as mentioned by logfiles and jackg differs from different exchanges and afaik it depends as well on what level/tier you are in an specific platform - it varies.
Hi Thank you for replying to my question the Exchange I am using in the question is Kraken and they mentioned that Trading fees apply when opening *and* closing a position, on top of rollover fees)