The US equity market has changed a lot recently, with more automation and new trading platforms. Traders still want to reduce trading costs, like commissions and spreads. New technologies help traders use old strategies better. The market quality has improved in many ways, like faster executions and lower commissions. But there's a need for a better system to manage risks from computer-generated chaos. Some pricing practices cause problems and should be fixed. Overall, the US equity market has improved, but there are still areas that need attention.