IIRC, NBBO isn't affected by odd lots except outside of regular trading hours. You'd have to trade shares in multiples of 100. That's after the order book empti

IIRC, NBBO isn't affected by odd lots except outside of regular trading hours. You'd have to trade shares in multiples of 100. That's after the order book emptied to the ask/bid and a corresponding trade appeared. Then, someone could immediately decide that price was too high/low and the next trade moves it back, where the consensus keeps it.