I think this was due to a rogue market-maker with bad algos. Market data was all over the place this morning. Nobody had a clear view on what the market order b

I think this was due to a rogue market-maker with bad algos. Market data was all over the place this morning. Nobody had a clear view on what the market order book looked like. I'm pretty sure theres a market-making firm out there that may not be in business tomorrow.