As far as I know, yes (I'm not 100% because I don'ty have the quantity showing in selling manager, but I can sort the listings by any of the columns I have chosen) - once you have set it up so that available quantity is one of the columns displayed, all you need to do is click the heading in Selling Manager for.

If you click the heading once, it will sort the listings in ascending order (lowest quantity to highest), if you click it again it will sort the list in descending order (so highest quantity to lowest). Click any of the headings to re-sort the list according to that order (generally, I sort by ending soonest, but occasionally sort by #watchers or #views just out of curiosity).