I am looking at GM stock charts on Nasdaq after hours but it does not show the date . I am thinking the chart is showing Wednesdays data since normal trading ended early plus it likely was closed for Christmas. I will propbably have to wait for Pre-Market data. Is there other times when investors do not have access to ECNs?

 

  • The Finance Buff 5:04 pm on March 5, 2010

    No they are not open 24/7. For example Nasdaq extended trading is 8:00-9:30 AM Eastern Time and 4:00-6:30 PM Eastern Time.

  • Brenda M 5:04 pm on March 5, 2010

    The only time you have real live data is when the markets are open and even then if you are using a broker or "on line" access system to do your own trading there tends to be a slight lag time in the numbers you have vs. the numbers that are actually at the exchange real time. the lag can be slight ~ meaning seconds. However, sometimes seconds can mean a lot.

    People can use their on line privileges to set up trades they wish ~ those trades will only come on line when the markets open or specifically when the trader has set up the parameters for a trade to happen at a particular price point.