25% Comes From Imax Theaters Tron: Legacy crossed the $100 million mark at the domestic box office on Tuesday. The movie, budgeted at $170 million, which has been in U.S. theaters for 12 days, has also made around $75 million overseas. The most interesting note about the domestic number is that almost a quarter of the box office receipts -- about $25 million -- are from IMAX theaters . Tron is playing in 3,451 theaters across Canada and the U.S., with only 235 of those being IMAX houses. For that low count to generate 25% of the gross is astonishing. And a record proportion for IMAX. Read more after the Jump.. But while that is good news for IMAX, it’s not necessarily good news for Disney. IMAX filmgoers tend to be in the 15 to 34-year-old demo and are -- how shall I put it? -- geekier than the average person. So the numbers reveal that while the tentpole is performing solidly in its core demo, it’s ability to break out into a broader audience might remain a bit elusive, despit