| This "Change" value is computed as a difference in price
from the "Prev Close" (Previous day's closing price) quotepage column.
Some data services provide and update this previous close value each
time you log in, while others do not. Those that update it
automatically should reliably show accurate Change, %Change, and Prev
Close values. If your data service is not reliably supplying this
value, a custom column may be create to simulate the Change column.
Right-click on any column heading and choose "Add Custom Column".
Then double-click on the "New" choice in the list. A new Custom
Column Setup window should appear.
In the "Type" tab, select "Custom Indicator" and then click the "New
Cust. Ind." button. Create a custom indicator with the simple
syntax:
SET(PREV, CL.1);
CL - CL.1
and save this custom indicator with a name like "myChange".
This custom indicator will serve two purposes. The first line will
set the Prev Close quotepage value to the close of the previous daily
bar. The second line will return a result of "Change" or current
close minus previous days close. By setting the Prev Close here
properly, the %Change, Change, and Prev Close columns should reflect
this.
Now, back in the Custom Column Setup window, make sure the new "myChange"
custom indicator is selected from the list. Also, make sure the
periodicity control is set to "Daily" (to which it should default).
Now, click the "Add to Quotepage" button. It should ask you for
a name for this custom column, to which you might want to use something
like "Chg". Now, the Chg column should appear in the quotepage.
If the values still appear to be inaccurate, it's likely because the
daily data is incomplete. The last two daily bars are required (to
be complete) in order for this to work properly. Simply download a
few days of daily data on the quotepage (click Download Data button in
main toolbar) to correct this problem.
You may use the "Rules" tab of the Custom Column Setup window to
customize the look of up/down prices, etc. (green for >0, red for <0,
etc). |