Quote from stock777:
By the time you have seen or your 'blak' box has registered an easy opportunity, it will have been long gone, flipped, and relegated to ancient history.
NYSE... has reduced the time it takes to execute an order to five milliseconds from 105 milliseconds, with the implementation of the new NYSE Super Display Book system (SDBK) for processing orders. As a result, NYSE customers are experiencing trade executions and reports within five milliseconds, as well as order and cancellation acknowledgments in just two milliseconds.
NYSE SDBK replaces the well-known SuperDOT order delivery and processing system � which for 33 years was synonymous with electronic trading � as well the Post Support System, which routed orders to the trading floor. NYSE SDBK is a server-based system based on NYSE Arca�s industry-leading trading engine, providing much greater throughput, flexibility and scalability as well as lower operating costs compared with the mainframe platform that supported SuperDOT.
�We have improved system latency to the single digits today from 350 milliseconds in 2007,� said Louis G. Pastina, executive vice president, NYSE Operations. �NYSE customers can now access our market with greater speed and assurance, and their orders will be delivered and executed more efficiently than ever. For the first time on NYSE, customers can employ the benefits of competitive speed and automation in addition to our longstanding value of high-touch price discovery on the only U.S. exchange cash equities trading floor.�