I don’t know the reason for this glitch, but from prior knowledge:
- BRK.A has an extremely high share price, in the hundreds of thousands of dollars for a single share, which causes issues
- NYSE has a very complicated trading system, because it tries to do things that no other market does, like having special privileges for manual floor traders, and because their markets have highly complex trading rules in general. I’ve written connectors to some of their Pillar protocols and they were… unusual