[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Different Opening Prices on SP same day???



PureBytes Links

Trading Reference Links

In TS I have created a chart with Data1 = 30 min SP7Z and Data2 = Daily SP7Z. I have notioced that the opening price on the daily bars is significantly different than the morning open on the shorter term chart even though they are the same data stream. For example:
Daily bar open 11/24 = 967.50
30 min bar open at 8:30 = 960.50
For 11/21  Daily bar open = 962.50    and 30 min bar = 966.00
 
I am writing a system which requires a calculation from the longer bars and uses the shorter bars for testing. I can't figure out why the difference. Symbol Universe is set 8:30 to 3:15pm -- no second session. 
I don't know what is wrong. Any suggestions would be appreciated. I have to get prices on the daily bars that reflect actual daily trades.
Karl  kschr@xxxxxxxxxxx