If you are storing eggs for hatching, on the other hand, keeping them large end up is much more important.

When storing eggs for hatching, you'll want to store the egg large end up is so the air cell does not misplace, which can cause a reduction in hatchability. Also--don't put eggs you mean to hatch in the refrigerator! Store eggs for hatching, ideally, at a temperature of 60 degrees Fahrenheit or so.