Wenger has already spent over £60million ($101m) on the signings of Mathieu Debuchy, Alexis Sanchez, David Ospina and Calum Chambers and the Frenchman is confident of making more additions to his squad.
"I’m still open to do more and let’s not forget we are on the first of August today and the transfer window closes on the first of September," he said.
"For years, it’s been a long time sitting with you here on the first of August having done quite a lot so we are a bit ahead of what we usually do. The availability on the market was bigger and earlier than before.
"The bigger clubs have done their deals early and when one starts, everybody follows and that’s why it was a bit quicker.
"Many clubs decided to do it before the World Cup and after the World Cup, not a lot has happened but I think the second week of August will be busy again.