I suspect many are held by ticket brokers and corporate accounts. I say this because I know the first several years they were grossly overpriced and went unsold. When they finally sold they didn't go to the historical high money donors but rather people who were willing to pay the Tech Fund fee. The oldest and biggest donors tend to sit in 106, 50 yard line of lower west. We need to re-seat the whole stadium so everyone has a fair shake at the prime seats but it would be best to do this after a good season or two.