Soy Sauce storage container
Soy sauce is extremely salty, which will inhibit growth of pathogens; Eat by date suggests 2-3 years, once opened, if kept refrigerated.

With the small hole, better safe than sorry.  I would recommend keeping it in the refrigerator.  

If you are not going to use it for a longer time, give it a better seal by placing plastic wrap over opening.  Depending on the exact nature of the container, you may be able to remove the top, place plastic wrap over the opening, and then replace the cap.