The real question is basically how much is it leveraged. We learned this from so many other frauds/crashes. It's not so much that "as long as there isn't a run

The real question is basically how much is it leveraged. We learned this from so many other frauds/crashes. It's not so much that "as long as there isn't a run on the bank it's fine" it's that an outflow of a tiny percentage could effectively be a run on the bank, since they may only be backed by a tiny fraction of what they claim to be backed by. It's one thing if they have 90% backing. What happens if it turns out it's only backed 0.05%? A run on the bank won't kill them, an averagely bad few days could see it all collapse. This is exactly why banks have regulations.