'Quote stuffing' is there, because of absolutely ridiculous SEC rules. If you'd put in fractional prices and remove NBBO rules, there wouldn't be any 'quote stu

'Quote stuffing' is there, because of absolutely ridiculous SEC rules. If you'd put in fractional prices and remove NBBO rules, there wouldn't be any 'quote stuffing'. And latency arb. What's wrong with latency arb? How else can you move information from one exchange to another fairly? Think of HFT's as of part of the financial network infrastructure. Where exchanges play role of nodes and HFT companies role of links/queues/buffers.