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Question |
How do I follow the advance / decline line in the IB
Version of Investor/RT? |
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Answer |
The NYSE Advancing and Declining Issues are available in
the IB version of Investor/RT using the ticker symbol AD-NYSE. The
AD-NYSE instrument must be setup as an “Index” with Override Exchange
code NYSE. This is an unusual IB symbol. The advancing issue count is
transmitted via the bid and the declining issue count as the ask price.
The number of unchanged NYSE issues is reported in the “Bid Size”. No
“Last price” is transmitted for this symbol.
Changes were made to Investor/RT 8.5.2 for IB to allow the advances, the
declines, or the difference or ratio of the two to be easily tracked
using custom instruments. First, the bid (advances) of AD-NYSE is mapped
by Investor/RT to the last so that a simple line chart of AD-NYSE will
show you how the advancing issues changes over time. To see the
declines, setup a custom instrument (Setup: Custom Instrument), a “sum”
of just one component AD-NSYE using the ask price for that one
component.
To track the advances minus the declines or the advance/decline ratio,
create a custom instrument with two components as a “difference” or a
“ratio”. Both components will specify AD-NYSE with the bid price
specified for the first component and the ask price specified for the
second component.
The IB ticker symbol VOL-NYSE works similarly. The advancing volume is
reported in the bid, the declining volume in the ask, and the unchanged
volume in the bid size. Similar custom instruments can be setup easily
to track the NYSE advance/decline volume spread or ratio.
Historical data for these custom instruments is not available. The
custom instruments will update in real-time for charting or display in
quotepages. Mark the custom instruments for intra-day monitoring to
retain real-time collected historical data for charting.
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