To me, "stocked" simply means full shelves.
You've stored away all you can fit without expanding, and are mostly comfortable with your future survival chances based on that supply.
This will vary from person to person and family to family, extending all the way up to groups of families if you're really organized.
I would like every human to have 3 months worth of food, fuel, water procurement, and defense "stocked" for themselves.
If we could get even 1/4 of western culture to slowly build to this, so many problems would go away. (and a whole new set would arrive, but we'll deal with those later, ha!)