As far as I know, IEX is of no use for the average joe investor. We aren't buying and selling in blocks of 1000 or 10,000. Believe what you want, but there is

As far as I know, IEX is of no use for the average joe investor. We aren't buying and selling in blocks of 1000 or 10,000. Believe what you want, but there is a reason companies pay big money for super low latency.