All 3 of the leads are male...
Toy Story: 2 male leads: 0 female leads
A Bug's Life: 2:2 (Flik, Hopper/ Atta, Dot)
Toy Story 2: 2:1
Monsters, Inc: 2:0 (And I'm pretty sure Randall and Waternoose have more lines than Celia, Roz and Boo)
Finding Nemo: 2:1
The Incredibles: 3:2 (I'm counting each family member minus Jack-Jack as a lead, plus Syndrome)
Cars: 3:1 (at this point I'm feeling lenient, so Sally gets to be a lead character)
Ratatouille: 2:0
WALL-E: 1:1
Up: 2:0
Toy Story 3: 2:1
Cars 2: 2:0? 3:1? I'm having trouble remembering the characters involved, but maybe it was 2:1, since Lightning didn't have much of a part.
Brave: 0:2
Monsters University: 2:0
Inside Out: 0:2 (1:3 if you include Riley and Bing-Bong)
The Good Dinosaur: 2:0 (I didn't see it, so correct me if I'm wrong)
Finding Dory: 2:1, or 3:1 if you include Hank
Cars 3: looks like it will be 2:2, surprisingly
I know that women get a ton of diverse roles on the Disney side of things, but this pattern is distressing.