Look no further than the linked article. > a high quote rate from any NYSE stock will cause a corresponding delay in all NYSE public quotes! Anyone with this k

Look no further than the linked article. > a high quote rate from any NYSE stock will cause a corresponding delay in all NYSE public quotes! Anyone with this knowledge can easily cause latency on demand across many stocks, by simply blasting quotes in any one stock Or another link from this thread. > U.S. stock exchanges have invested huge sums of money creating two-tier markets - building and offering faster data and technology infrastructures at a price that only a small niche of traders can benefit from or afford, while at the same time continuing to offer slower products to everybody else. https://www.iextrading.com/about/press/op-ed/ https://www.iextrading.com/about/press/op-ed/