So: Is Knight toast or will they weather this massive storm?
At the moment, the consensus seems to be that they'll be bought out. In the meanwhile, apparently they're looking for a loan to tied them over. They do have some valuable assets, so that may happen.
One poin that not all KCG traders might not be aware of is that it was Knight's request to customers such as Scottrade and TD Ameritrade to not route their orders through Knight until they could locate and fix the error. So will those brokerages come back once the glitch is identified and correctd!
Hard to say. I suppose much of that has depends on whether it looks as if NITE will survive in one form or another. It's been reported that many of their clients are still routing through other wholesalers, perhaps in part because they want to avoid settlement problems that might arise if something unexpected happens over the weekend.