There are still millions of stock traders, if you're meaning brokers, then yes, automated routing and matching has dropped the number of brokers dramatically. I

There are still millions of stock traders, if you're meaning brokers, then yes, automated routing and matching has dropped the number of brokers dramatically. It's estimated around 10% of the volume of trades are still the result of people making decisions, which is actually an incredibly large amount because electronic trades create such an enormous volume that to even make up 10% means a lot of traders are still out there picking stocks.